Screen spanning & full screen

[nichos]

Hi all, I just got a Dell 1905FP LCD monitor, which is 1280x1024 native. I've installed the screen spanning hack. I have the resolution set to 1280x1024 but I get a big black boarder around the screen. That is, it doesn't look fullscreen. When I go back down to 1024x768 it's fullscreen. I'm not using mirroring. Anyway to fix this? Thanks,
Nick

[nichos]

How about has anyone used the screen spanning hack, and had the same problem? Are there no answers because nobody knows, or I'm missing somethign obvious here? :D
Thanks again

[ITASOR]

When you put it on 1280x1024, my LCD does the black border too. Then I have this button called Auto Adjust, which, when pressed, adjusts itself perfectly. Have a button like that?

[nichos]

thanks for the reply. Yeah, I have a button like that, but it doesn't fix this. It does auto adjust, but doesn't remove the big border. Any other ideas? :(