I have always been curious about pinball emulators and had some success in the past with FP but not VP unfortunately until recently when I followed a step by step guide on setting up VP9. I got some tables to play such as Funhouse or World Cup Soccer 94 but others like The Simpsons won't render or give some sort of error about the Z-buffer.
Let me list off my gaming computer specs which I built back in May '08.
E8400 Dual Core CPU
Asus P5K
8GB DDR2 1066 Ram
BFG Nvidia 8800GT 512mb Video Card
Samsung 750gb HD
Antec Sonata III w/500w PS
Running windows 7, now I think my problem is my video card is not up to par with VP standard requirements. I was wondering what you guys would recommend for a dual monitor setup? As much as I would like to have a third screen I am quite content with a setup like njay's shown here:

Right now I have a 24" Samsung LCD which is running 1,920x1,080 resolution which I plan on using for the backbox and DMD. I am currently trying to source out a 37"-42" LCD or Plasma for my playfield.
Any help or advice would be greatly appreciated, thanks guys.
Mike