Virtually any ATI or nVidia based card will do (and pretty much all are made by or the other). 128 meg is certainly enough (though you likely won't find one that small).
The program is not very graphics card intensive, so you won't see any boost in performance from a faster or more powerful card.
Understood. Thanks Steve.
One more question - assuming all other components are equal, which setup would give me better performance?
- i5 quad core with discrete graphics card
- i7 quad core with integrated (on CPU) graphics