b ) Not sure if you have nvidia, but if you use AMD open the Catalyst Control Panel, and under Digital FLat Panels, there are scaling options. Tool around with those.
Definitely try your graphic card control panels.
I used to use an HDTV and they have odd default resolutions. You have to test them to see what works, what comes close. 1440x900 worked well on the 26" HDTV I used.
You will probably need to adjust the vertical and horizontal placement on the television itself once you find the resolution that works as a final tweak.
I liked the HDTV overall. If I had an issue it was with the fonts (clear type doesn't always help with HDTV's) and the color, contrats, brightness, etc. etc.. Color adjustment on the HDTV's can just be brutal, especially if you're skinning. If you are skinning, have other folks test your skins (colors, etc) or use a laptop or regular PC monitor if you have one. There will almost always be a difference between the two.