I have an older ATI video card on one of my computers, I checked my available resolutions and I see 1360x768 and 1360x1024 as my available screen choices.
The video card I have on this system is an ATI Radeon X300/X550/X1050 Series, it allows dual monitor, it has an AGP, DVI and S-video port.
This is through Windows XP's screen properties and I have it set to 32 bit.
I am not sure where you are seeing 1366x768 as an option, unless you are using the ATI catalyst color center, which loads settings once the software has loaded, but I do not see an option to choose 1366x768, so perhaps the solution is you should be choosing 1360x768 instead.
Have you tried right clicking the desktop and choosing properties, settings and slide the slider over to 1360x768? If your using dual monitor connections, there should be two screens in the middle of the box, select either monitor 1 or monitor 2 and make the changes and click apply.
Like I said, you are choosing 1366, try choosing 1360 instead.
Let me know if this resolves your issue.
Edited by MrBruce1959, 02 October 2011 - 08:03 PM.