This results in any application that is not native 1366x768 to run with large black bars where the screen space is not used and the application in the middle at 800x600. I should have an option in the display driver option to stretch to full screen.

I have a Dell Optiplex 360 that came with XP Pro preinstalled and a licensed copy of Windows 7. I have both OS CDs. However no documentation was included as to how to do the upgrade and I can't find anything on this site.

They also installed a Nvidia Quadro FX3400 - 256 MB GDDR3 - Dual DVI Output graphics card. At startup there was a warning message that the card was not receiving enough power. It transpired that the card did not have a PCI Express power cable attached. One was sent to me & I fitted it.