If you wish to remove cached files or history you must to click on Tools option in the menu (IE6 +), choose internet options and there look for "general" tab, click on "remove cookies" and "clean history" (these aren't the exactly names, because i have spanish version, but they're very similar). You shouldn't to have visited links in your Windows registry, if that is happening then you could to have an spyware installed on your pc. If you're yet having troubles with this one, please tell me. Good luck.How do you do it?