basically want to share the C drive of all the computers on each of the computers.
well here is what you do, im assuming you have Win. XP
1) go to "My Network Places"
2) on the left panel there should be "Set up a home or small office network", click on it.
3) go through this wizard
4) create the disk at the end and run it on the other computers
5) right click on the C: drive icon in "My Computer" and click on "sharing and security"
or
5) if you dont want to share the whole C: drive then right click on anything that you want to share and "sharing and security should still be their"
the rest should be obvious.