Linux/Windows XP easter egg
I don't know if this also works on Windows 2000, but see what happens when you try to turn BILL into LINUS
1) put your mouse on the empty desktop and put the CAPSLOCK on (this won't work without it)
2) using your left hand hold the Alt and the Control keys down. Don't let go until you hit the '!' key.
3) using your right hand type BILL
4) now erase BILL by hitting the delet key four times
5) (using your right hand) type in LINUS!