I'm off for a walk, to give the grey cells time to recover.THE 8800GTX card has just arrived. The first installation step is to remove the existing drivers, via Control Panel. This I did but the screen looked unchanged so I did a restart. It was still unchanged.
Going via the scree and Properties route I arrived at the drivers page and opted to uninstal. It refused, on the grounds that the driver is required to boot up the computer.
Any ideas folks? BTW it weigh a ton and is going to be a tight fit. Gerry Winskill