How Do I Adjust The Monitor Resolution??

I am using an ati card with a max resolution of 1920 x 1200 and an lcd monitor with a max resolution of 1280 x 1024..

linux had no problem using them as far as i can tell, but when i try to adjust the resolution to my usual 1024 x 768, i find that the max adjustment is 800 x 600..

i am using the recommended opengl ati driver and i don't have any proprietary drivers installed on the system.

i'm only a 3 day old linux user so maybe somebody could point me in the right direction?

thanks..

this is strange..

i was messing around with the bios and i accidentally crashed it....lol..

having done this many time over the years, i make it a habit of typing every setting from every menu into a document before i start to play..

that being said, when the bios crashed it sent my pc into an infinite reboot loop, and the only way i could get out of it was to turn the power switch off and clear the cmos via the motherboard jumper..

to make a reallllly long story short, i set the bios back to where it was before i messed with it, but suddenly, i have full video resolution and my latency numbers are way less than they were before all this happened...

i triple checked the settings and they are right on the money..

old latency numbers:

1006544 - 10222 - 34941 - 10883

new latency numbers:

1004461 - 7956 - 33400 - 9095

does anybody have any idea how this happened??

thanks..

The other cause is DDC is up the creek.