Good that it works for you ( i see you got a very new card). I got a 8800gts (512MB , g92 chip) which isnt that old (renamed to geforce 9xxxx afterwards) so, anyone any clues why the last generation of geforces dont play the tech demo / game under vista 64-bit ? Thx.
btw, did i mention that the latest nvidia drivers r installed ?! I guess not