Ok, anyone with an acer aaspire one on Win 7 can forget about screen res settings and actl programs, they won;t fix the problem.
However there is a way, if your comfortable editing your register..
Go to Run command, type regedit and enter.
Once in here don;t mess around.
Select HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Video\{FEE9B7B8-B684-444A-BB90-505CAF0F90E4}
Now in sub folder 0000 select entry display1 downscaling support and set it to 1 instead of 0.
Save your settings and exit.
Now goto your display adapters setting and you will be able to set screen res to what you want.
Enjoy, took me hours to find it
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