I am using windows 7 64 bit and on my desktop the picture (Directv component) doesn't look as good as on my windows 7 64 bit laptop. The desktop is a Intel quad core 9550 with 8 gig of RAM. So its more than sufficient and far more powerful than my dual core PC. I read some other threads on here about jaggy video caused by running windows basic theme. However I run Aero. BeyondTV plays video properly for OTA HD. Text on the screen is more blocky at times then I think it should be. I tried some of the suggestions of editing the SBcore.ini file but that didn't make a difference. I updated my graphics driver to the latest nvidia driver. Not sure what the issue is. Any ideas?