Here's an interesting prompt for any win2k Users, little Unixesque:

prompt [%username%@%computername% $P]# && COLOR 0A

Ends up like this:

[jimmy@MY2KCOMP C:\nmap]#

and it's bright green on black, get rid of the color arg at the end if you don't want cool goofy green hehe.

kinda long for CMD users, but kinda interesting, expecially for remote admin via command line so you never get mixed up or something.