Witty line catalogue

Hey just wondering if it was possible to put witty one-liners in a file (eg witty.dat) and have some kind of code in my signature that would randomly select one of these lines to put into my signature. I would do it myself, but my computers teacher is an absolute idiot and I am forced to go on MSN instead. ANy help would be appreciated.

Hey there ! Welcome!

I just responded to you on Pandemoniums thread!

see you found this one.

have fun !

welcome....
seen you around the board, great you jumped right in lol
now pull up a chair and tell us a little about yourself..