[SOLVED] Define underscan only for 720p

[p4trykx]

Some more news. I was looking around the TV's menu and found some settings that make the screen look OK in 720p resolution.
First you have to switch to 720p in Xbian Settings System. This cuts the edges of the screen on my Sony TV. Then push Home button on remote and go to Screen Settings. I think it's the 3 active option. You can set it -1 +1 and maybe "all the pixels". In 1080p I can set it to "all the pixels" which seems to be the best but in 720p when setting "+1" the screen is about right.