My review of the Hercules Game Theatre XP is <A HREF="http://www.impactsites2000.com/tekreview/audioxp.htm" target="_new">here</A>. I highly recommend it, although I haven't used it in XP. Hercules' sound card drivers are less than perfect.
I have had nothing but problems with Creative cards, mostly because of drivers. I don't recommend them to anyone.
That said, you can also try Turtle Beach, if you like. I had a Philips Seismic Edge and hated it. Drivers were poor, and the chip on it was really bad. All three Philips cards use the same chip.
Hercules supposedly has a new card coming out soon, but I have no info on that.
Hope my post helps, but I suspect it didn't
<font color=green>I post so you don't have to!
9/11 - RIP</font color=green>