Enable to change customized screen resolution?

I’m wondering if TV screen resolution is locked. TV only support 3 resolution, 480p, 720p, 1080p/i

TV is good for my TV screen, but I can see only black screen via my cinema display 23’ .

I have a question. Is it possible to change screen resolution on TV? for example, system preference > display.

I have a mac machine, 10.4.9 osx tiger is installed. Using FTP, I transfer system preference.app in MAC to ATV (frontrow/application)

And when I try to open system preference.app , it didn’t appear.

Anyone who know how to set customized screen resolution? I would like to see 1280x800.

Any helps are appreciated!