I just this this couple days ago. I just got a new Audigy, Asus p4t-e, and 1.8a Northwood. I removed the video and sound driver. I am running dual boot with two hard drives. All I had to do was installed the Intel chipset driver, video, and sound driver. Windows XP redetects all the other hardware. So far everything runs fine and stable.
Hmmm, your case might be diffrent because you are running a difference chipset. I upgrade from SB live, Asus P4t, and 1.4 P4. Just format to be safe.