Finally I found the PS/VS settings in the registry. They did not dissappear after uninstallation and not even by Driver Sweeper or Driver Cleaner. I deleted those strings manually and everything works fine again! Strange how they worked for awhile in San Andreas, and all the sudden messed up the whole system! But they were shown as No Override in ATT as many other settings that I tough were defaulted; but the issue was that ATT didn't show the correct values in the Standard Tweak Section. I don't recall such issues with ATT in XP, are you releasing a more Vista-optimized version soon? Thanks, now I never touch those settings again!!!