I found stud sensors at Home Depot from $15 - $30. Get the expensive kind. It will eliminate a bunch of guess work. Now, on my walls, I kept finding what I initially thought were studs running horizontally about midway through the walls. This scared me to death but it turns out I was picking up the joint between two sections of vertically stacked drywall. You will find that the studs are located between 16" and 22" apart. It is important to get an idea of how far apart they are in each wall so you know your margin for error (you don't want to cut your hole for your wall plate between different studs than you drilled for the cable drop). Try to find a set of studs that don't have any power lines running through them as this will reduce interference on your cables. The stud sensor I bought also had a wire locator. This is great for finding where those power lines are hiding.

Once you've picked where you want your wall plate, you need to go up into your attic and drill your hole in the joist (the 2x4 that runs above the wall). You are going to need some measurements of various landmarks in your attic to find where the hole should be drilled. I used a 1" bit for my holes. I found that it can hold 8 cables. I ran 4 through each one. It is better to drill too large a hole than too small of a hole or your joists may end up looking like Swiss cheese before you are done.

I started drilling with a cordless drill but I soon realized that it didn't have the power to drill the 1" hole so I switched to a regular drill. Save yourself some time and make sure you have one. One problem I ran into drilling the holes was over our two extra bedrooms. There were 2 2x4's running 6" above the joist I needed to drill through. Since I couldn't get my drill and bit above the joist and under the 2x4's, I had to make another trip to Home Depot to get a 14" long bit and a 6" extension. I had estimated that I only needed 14" to get through the joist but after my thrid trip to Home Depot, I realized to err on the side of excess. It turns out I needed that extension.

Now, before you start drilling, you probably will want to turn off most of the power in the house at the breaker. I turned off all the breakers except for some outlets on the other end of the house and ran an extension cord into the attic to power the drill and a light. It really would have sucked to drill through a live power cord running under a joist.

Remember to drill your holes before you cut into the wall. If you realize you made a mistake, it is a lot easier to cover up before you cut your holes in the walls.

This is the part of no return. Make sure your mesurements are correct - measure twice, cut once. The wall plate mounting boxes should have a template for cutting into the wall. Take some measurements of the height of the other outlets on your walls and calculate where your cut should be (remember, the wall plate will be larger than the mounting box). When you actually draw your lines, use a pencil or something you can get off the wall if you realize you made a mistake. Also, use a level - it may look even when you eye ball it but it won't when you cut it.

Before you start cutting, it may be a good idea to take a needle and a tac hammer and make sure that you aren't about to cut into a stud. If the needle can get through the wall, you should be OK.

Now, to get the dry wall saw (looks like a large steak knife) into the wall, you can either use a drill or simply push. Pushing worked fine for me. Before you finish the cut, you may want to hammer a nail into the section you are removing so you have something to hold on to to keep the cut out from falling into the wall.

For the patch panel, the mounting bracket had a 8" oval hold in the middle of it. I simply cut that oval into the wall for the cables to come through.

If everything went OK, this should be easy. Go up to your attic with a string and a weight tied to the end (you wife's wedding ring should work) and lower through the hold in the joist. Have someone on the other end pull it through the wall. Make sure that the string doesn't fall through either hole by tying it to something on either end.

Next, cut your cables. Get a good estimate of how much cable you need. I have 10' walls so I used a minimum length of 24' (20' to get through the walls and an extra 2' on each end to give me some slack for punching it down into the patch panel and the jacks) plus whatever length I would have to transverse through the attic. When you are done, the extra slack will be pulled into the attic giving you some liberty on how to position your cables to avoid power cables. Now label both ends and the middle of your cables. Come up with a numbering scheme and use it (1 - 16 worked for me as that is how my patch panel was numbered). Use masking tape or something for the labels. Make sure they don't fall off and you can read them. If you lose track of your cables, it will be a nightmare finding them again.

If you are doing multiple drops to the same wall plate, tape the end of the cables together so you can run them all with one drop. Now, tie the end of the cables to your string using masking tape or something. Make sure it is secure (you don't want it coming off in the wall). If it was difficult getting the string though the wall, you probably want to tie another string to the attic end of your first piece that way if you decide to drop more later, your string is still there. Make sure to affix both ends to something such as the mounting bracket and a 2x4 in the attic.

Now, remember these rules when working with Cat 5:

• Never pull Cat 5 with more than 25 lbs. of force. It will damage the cable.
• Never kink a cable - the tightest loop in a cable can have a radius of 1" (or a diameter, I can't remember - just don't do it).
• If you have to cross a power line, cross it at a 90° angle. Never run parallel with a power line

I suggest punching down the patch panel first as it will make testing go faster. After I had dropped cables for one room, I punched down all of the cables for the patch panel. This way as soon as I finished punching down a keystone jack, I could test the connection.

Now, punching down is probably the most tedious part in the process. You may want to do some test punch downs on between a couple of keystone jacks an a 1' length of cable before you try it on your cables in the wall.

Here are a few rules for punching down the cables:

• Seperate the pairs as little as possible - once you remove the outer insulation, you will see 4 pairs of twisted wires. Try and keep them twisted.
• Have as little wire outside of the outter insulation as possible. I believe the maximum is 1" which is probably what you'll need on the patch panel but much less on the keystone jacks.
• There are 2 main wiring schemes that dictate which color wire goes to which terminal (T568-A and T568-B). Obviously the electrons don't know the color of the wires as long as you are consistent on both ends. However, it is important that you don't mix pairs. In other words, if pins 1 and 2 are for the blue/blue-white pair, you can't use the blue wire from the pair and then use a brown-white wire from the brown/brown-white pair.
• The impact tool will have an end labeled "cut". The cut end goes to the outside of the terminal. This end will cut the excess wire off so if it facing the wrong way, you just cut your cable - whoops
• The impact tool may have a knob for choosing low or high impact. Use low - I tried high and it never worked for me.
• Make sure you have a hard surface to work on and the impact tool is vertical.
• Bring the cables in parallel to the terminals, don't come in from above.

And here are the two wiring schemes:

Once you've finished punching down your 8 wires, you may find that the impact tool didn't completely cut the excess wire. Just twist the wire around until it comes off.

This is a bit easier than the patch panel because of the way the terminals are lined up (2 rows of 4 instead of 1 row of 8). Make sure you use the same wiring scheme you did for the patch panel. As with the patch panel, make sure that the cable comes in parallel with the terminals (so that it runs between the two rows. As you finish each cable test it!

There are numerous cable testers available that will do things like tell you which wire is going to which cable. I just used a laptop and a hub to test the cables. If the light on the hub comes on, you're good. If it doesn't, for the love of god, make sure that it isn't your laptop, your hub or the 2 cables you are using to make the connection between the hub and 1 connector and the laptop and the other are working! Also, make sure that you have them plugged into the right cables (did you label them?).

If your cable doesn't test okay, first check the wiring on the patch panel and the keystone jacks to make sure the right wires are going to the right pins, if you find an error, you can pull the wires out of the terminals, re-strip the cable and try again.

If everything looks okay, it may be a bad connection (this is where a cable tester would have come in handy as it will test DC connectivity). Try redoing the keystone jack and retest. If it still doesn't work, try the redoing the patch panel. Before you start pulling wires, check again that you are using the right ends. You will kill yourself if you try repunching a cable 3 times only to find out that you were using cable 13 in the hub and cable 9 on the laptop.

If you had a nice little network with say 2 computers, a hub, a router and a cable modem requiring 4 patch cables (the cables with the male connectors on the ends), you are going to realize that you will need at least 3 more to use your new wiring as you will have the extra connections for your hub in the wiring closet. You can go ahead and spend $1 - $7 on some cables or you can think to yourself, "Hmmm, I've got 300 feet of cable right here; maybe I should make my own."

Making cables is cheap but a pain. You are going to need an 8 wire RJ-45 crimp tool (about $20) and some RJ-45 modular plugs (cheap as dirt). See crimping Cat-5. There is also a good tutorial with pictures on how to make patch cables at http://www.lanshack.com/highlights/makepatch.htm. It takes a bit of practice to get it right but after wasting a couple of connectors, you should have it down.