Well we all know how much of a pain it is to find working sound drivers for Vista and creative products.
Well here is the dumb fix, whenever I tried installing the drivers myself, it would never work, but, if I uninstall the drivers for the card, then restart, and allow Server 2008 to locate and install whatever driver it wants upon loging in, it installs and works.
Until the next restart, then it stops working, so if I want to use my audigy 2 zs, I am going to have to uninstall my sound card drivers every time I need to restart....
Crazy...