help with screen resolution

[Jan Brosius]

Hello,

I use fedora 8. Just to play I changed my screen resolution from 
1280x1024 to 1280x800. I logged out, logged in again (now with 
resolution 1280x800) and then I wanted to change again to 1280x1024 but 
I saw that this was impossible. I only get 1280x800 as highest possible 
choice. How can I restore my screen resolution to 1280x1024.

Any help very appreciated.
Jan