Widescreen Gaming Forum

Hi guys, don't know if this is the right forum to post this question but I'll try.
I just bought a ps3. Right now I'm playing on a Samsung 245b screen, til I buy a new fullhd TV in a month or two. But since the computer monitors have a resolution of 1920*1200 I get some scaling and stretching from ps3 when it outputs full hd (1920*1080). I want it pixelmapped 1:1.

So, my question is; is there any way of "turning off" some (physical) rows of pixels on the computer monitor so it gets a resolution of full hd 1920*1080. For instance, turn off the first 120 vertical lines at top or bottom, or maybe 60 lines both up and down.

Cheers