I've had a lot of problems with my desktop pc and did not get any help from AT&T, my internet service provider as they avoid giving any trouble shooting tips for the desktop issues. I formatted my hard drive and reinstalled Windows 98 and other programs viz. MS Internet Explorer 6.0, Mcafee Virus scan on line and Firewall. My screen resolution is 640x480 and cannot be changed to 800x600 even after going to display, screen area and trying to move the slider to increase the screen area. It just does not move! Could someone give me some tips to resolve the sound / display problems.