Your question is off topic. Search for a pc hardwaresite, not on a microcontroller forum ;-)
Anyway, for this time I will help you; look for example here:

http://www.sonic.net/~alanwall...ortPC.html

or here:
http://wired.hard.ru/data/co_GameportPC.shtml

or here:
http://www.hardwarebook.net/connector...ortpc.html

they are all the same ;)

Or look at this one, with midi:
http://www.hardwarebook.net/connector...ortpc.html

Henk