My graphics in windows 98 are grainy. I went to go into the control panel to adjust my display settings but when I do, an error message comes up that says:"Error opening c:\windows\desk.cpl". And I cannot change my display settings. I have installed the latest drivers for my video card and have even re-installed windows 98, but this did not solve the problem. I still get the error message. Does anyone have any ideas on how to fix this?