There is another large group of users on a particular driver release for Creative SBlive and audigy users.
You-PAV drivers
I myself use the latest v2.0 drivers

See more here http://www.driverheaven.net/showthread.php?t=66519

i do have a pair of these monsters currently.
SLI would not give 2x the performance. It does help about 40% to 80%, the exact would depend on the software support too.

I would not advise you to get another voodoo2 unless u really have another spare card.
Well, if you can find it cheap, why not give it a try? Your P200 would have a 2nd chance!!

ahaha.. thisis indeed rare... unless i got the extra cash.... hah