Don't you have the CD that came with your sound card? If not, I have an Audigy Platinum, which takes the same drivers. Message me via ICQ and I'll send the drivers too you. Forwarning, the drivers are about 50 MB. You just have to go to device manager and to the properties of your sound card and install the drivers that way.
I have the cd installation for my audigy card, but it doesnt support XP, and when i can't install from the cd, i can't install the patches downloadable from their homepage =/
the thing is, they sell theese cd:s with drivers for XP on them, for $15, which i think is wrong, i bought the damn card for what, $150 something? don't remember, but its worth working drivers for it..
I installed Audigy gamer and had the same problem , they don't give you the XP drivers and they don't (CREATIVE) have the full drivers available in their website. What I did is after a clean install I went to device manager and uninstalled the yellow marked PCI card, which was my soundcard. I put my audigy driver cd in to my cd drive , then clicked on Scan for harware changes in the DM. WIN XP installs the best drivers it can get from your cd, probably win2k drivers. Then I installed the patch available from Creative. Rebooted. Worked great. After that you can install the goodies that come with that cd, specially the diagnostics tool and the firewire utility.