To delete Internet Explorer 7 or 8 from you computer, search for "unlocker" in the Google search engine. Click on the first search result to go to the unlocker site. Click download to access the unlocker application. Click the save me option when prompted. Next, find the downloaded files and install the unlocker application on your computer. Go to the local disk C, open the program files and find Internet Explorer. Right click on Internet Explorer and then click on the unlocker. Select the appropriate files. Next, go to local disk C and click on the windows folder. Click on your version of Internet Explorer. The unlocker will then permanently delete Internet Explorer from your computer system.