
Not to be a wiseass but, if you dont know how to install a fan yet, you better wait to start OC'ing... Most 3-prong connectors are set-up black/red/white, look at others on your MoBo as a reference...
*edit - does the fan work for sure? I know we all look for ways to cut costs, but ensure your 2nd-hand parts actually work before trying to install them...
Did you do a search yet...? Try looking here for ideas...http://www.overclock.net/showthread.php?t=6071