ltools are a set of disk tools that allow you to access your ext2 filesystem from windows nt and 95. I used them today to copy my 2.4.9 kernel to my linux partition because mandrake has a weird kernel setup, and upon my kernel recompile suffered a heck of unresolved symbol errors and couldn't find a way to copy a vanilla kernel.

ltools is maintained by Werner Zimmerman and is similar to mtools under linux and other unix platforms. It is also apparently available for other platforms such as os/2, MacOS and other unix systems, although I have not tested this so YMMV.

You can get more info as well as link to download ltools from here