Your resies are capped at 1280x1024 but you display at 1920x1080. Do you have more resolutions between those two? If so, that would indicate a driver problem or amybe the game is limiting the choice of available resies.
The only resolution avaible to me via Windows 7 or the ATI Catalyst are:
800x600 (4:3)
1024x768 (4:3)
1280x720 (16:9)
1280x1024 (5:4)
1920x1080 (16:9)
I tried running the game in every resolution availible in the game with and without the widescreen option checked off in the menu.
No Changes.
I contacted my brother and gave him access to my Steam account so he could download GTA:SA on his PC desktop.
His PC has the following stats...
Computer:
Dell XPS Desktop
Windows XP
Intel Pentium 4 CPU 3.8GHz
Memory: 1022 MB RAM
Display: Dell 2208WFP (22 inch) 1680x1050
ATI RADEON X850 Platinum Edition
He has told me that he is running the game in 1680x1050.
He said the resolution was availible in the in game menu.
I have no idea where to go from here...
edit to add:
I checked my driver one more time to see if it was truly up to date.
windows says it is...
...well I went to the ATI Site and found that the new driver was released on the 17th (version 8.671)
I currently have version 8.631...
I will update and report back. 8)
.....no changes were made via driver update
:?