I have been having problems with my NVIDIA GeForce 7800 GT card. When I update the driver to the latest driver bundle, which is the ForceWare Release 163, the video on my Windows Media Center live tv becomes choppy. It doesnt affect any of the other video formats on my computer such as Xvid or Divx, but only DVR-MS. When I roll back the driver to the old one on my computer the problem is resolved, however I have other programs on my computer that won't work at all unless I have the update. Any help on this matter is greatly appreciated, as DVR-MS is the main format I use to watch everything. Thanks