Which driver combo do you use?
Is it more like 163.xx and 162.50 beta or more like 94.xx and 94.xx beta or maybe 91.31 and 91.31?
All listed above should work to a certain degree on series7 cards.
Most stable for your purposes might be the 9x.xx driver combos.
The games might be of importance. Some don't work at all (cause crashes) or have just two identical images.
it might be the fact that you don't have any seperation or convergence.
Try pushing crtl+F4 for seperation and crtl+F6 for convergence.
4.) Wait some time until a new S-3D driver gets released. That should be just a matter of Years
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AMD x2 4200+ 2gb Dualchannel
GF 7900gs for old CRT with Elsa Revelator SG's
currently 94.24 Forceware and 94.24 Stereo with XP sp2!