I decided to keep Win2k over the Turtle Beach Montego II Quadzilla, so I upgraded to the Turtle Beach Santa Cruz. I decided all the time I was spending on getting all the features of the Vortex 2 in Win2k wasn't worth the trouble.
So far, the Santa Cruz has worked wonderfully in Win2k, and I don't have to deal with Creatives crap. (Liveware, new cards instead of upgrades to existing ones, etc...)