when I first got the G-3 my comp. wouldn't run the program, when I updated the card to the NVIDEA 6600 there were still glitches after I installed the supplied driver,went to the site for driver upgrade poof! works great also defragged my comp. helped alot there is alot of clutter out there .I run G-3 with Vscan and spybot and it works fine shadows and details intact, having the right updated driver seems to be the ticket .