I'm using the Onboard sound, and I like it alot. Much better than my Creative Low Budget Ensoniq PCI... Plus it's all built in, so no extra card in slot. Definitely give it a shot.. it has worked on all the games I've tried it on so far...
Unreal
MS Age of Kings (AOE II)
NFL Fever 2000
-- edited for cheezy grammar and gross mis-spelling. 😉 --