1440x900 no longer available on my external display after "MLB for NVIDIA" fix My early 2008 Macbook Pro was recently fixed for the known "MLB for NVIDIA" issue. Since I've gotten my computer back, my external monitor no longer has the correct resolution available. This was working fine before. I've tried resetting PRAM and the problem still persists. Why?

Computer: Early 2008 Macbook Pro, OS X 10.5.8
Monitor: Acer 19"
I'm not sure if this'll help (as the resolution should be available without resorting to third party software), but perhaps try SwitchResX and see if it makes the resolution available?