I am currently using Windows XP.LAst week my IE quit wqorking for all practical purposes. When I go to Tools/Internet options and then the Advanced tab, my screen is blank. I had the computer in the shop for several days and at least I can use Explorer in the general sense. I also cant delete mail from Yahoo any longer.I am at wits end. I tried to install a newer version of IE and the computer wont lewt me.IT says I have a newer version already installed which is simply not true. I have 5.1 installed and want to go to 6.0. Any suggestions as to what to try now?