I have an old Dell Dimension B110 tower computer. It is now running Win7Pro, and the monitor driver installed was a generic PnP. Tried to install a new monitor w/ driver, increased to highest resolution and now image is badly distorted. Cannot reduce resolution to potentially solve the problem - it's stuck. Cannot see anything to click on since the image is so distorted. Think the old video card in the tower doesn't support the higher resolution monitor. Need to know if I can either a) replace the existing video card or b) reduce the resolution so I can at least see an image and use the computer. Assistance in how to get either option accomplished is needed. Tried switching back to the old monitor, but no help. Do not have install disks, so can't just replace the driver. If I can, I don't know how.