The AutoRun feature in Windows does not only apply to CDs. You can create an autorun.inf file using the format specified above by dotc and save it onto a floppy disk, and it will work the same way. However, what is more fun to do is create an autorun.inf on the root of your hard drive, leaving out the line that starts with OPEN=, and your hard drive will now be represented everywhere by the icon file you specify! No more boring grey square thing!

If you need icon files, a Google search for "windows icons" or somesuch should produce good results.