Intrepid screen resolution messed up

[Samuel Rohde]

I booted my computer and my screen resolution is messed up throughout
the entire computer including GRUB and the entire GUI. It took off half
a task bar thickness(12 pixels) all the way around. I tried going into System >
Preferences > Screen Resolution and I tried every resolution but all
of them where the same. I am using an Olevia 232v 32" wide screen
TV/Monitor connecting the computer to the TV with a VGA cable. My computer's Video/Graphics card is an Intel Graphics Media Accelerator 950, the computer processor is an Intel Celeron Processor 420. I don't know if the CPU is a 32 or a 64 bit, but I am running the
32 bit Ubuntu version. How can I fix this problem? I have never had
this problem
before, until I upgraded to Ubuntu 8.10 from 8.04.