Well I went ahead and made the appropriate changes to the registry file there, and the good news is that it staved off the blue screen for probably 10 or 15 minutes instead of the usual 30-120 seconds after launch. So it seems to have done some good, but unfortunately hasn't fixed the problem. I'm installing Ubuntu 64-bit on another partition at the moment to do some system diagnostics on the rest of the computer, but since the BSOD still reads "System service exception" I have a feeling it is still related to this video driver issue. I do have a few comments/questions though.
-Since I'm running windows 7 RC and the earliest available driver for the GTS 250 on this operating system is the 190.36, do I have any other options apart from reformating with Vista 64 or hoping NVidia comes out with yet another new driver that just so happens to fix the problem?
-Who would I contact for support with this issue? I'm sure NCSoft can't do anything (Especially anything beyond what this thread has done), and I highly doubt ASUS (Card Manufacturer) or NVidia will be able to do anything either.
-With the original vista 64-bit driver that came on the card's utility CD, (I have a feeling it was the 169 driver listed for vista rollback in step 1) I had a terrible VSync issue/frame refreshing problem where I watched each individual frame as it was refreshed, creating a strobe-light affect. This was resolved with the new driver, however the BSOD problem arose, leaving me with the choice between seizure or irritation-induced brain anurism :P. Is there another driver I may be able to roll-back to, perhaps a microsoft one that could avoid both problems?
-And finally, I really appreciate all of the effort Tease and Prez put into this, you guys did an EXCELLENT job and even if this doesn't get resolved, I really appreciate the initiative.