hp slimline s7520n cannot use wireless connection

I installed vista and now my built-in wireless doesnt work. the stupid pc didnt come with a recovery cd. and my smart self wiped out the recovery partition the pc came with so i could install vista on that partition. lol. so now i cant get it to work. i would like to reinstall the drivers, but i cant find them anywhere! i have talked to like 5 hp reps. they all link me to a different driver, but not the right one yet! anyone have any other advise or have a copy of the drivers i need??? thanks!