1. Check www.samsung.com you can compare the features there.
2. Follow the instructions that came with calibration DVD.
3. You should be able to hook up both HDMI and S-video to your HDTV.
4. Yes, all HDTVs(except CRT) will upscale all SD video to native resolution.
Which dose a better job, the cable box or the HDTV of upscaling??? Try both ways and see which looks better to you. John