Internet Explorer's right-click context menu may contain items you don't need or ones that point to nonexistent programs. You can use the Registry Editor to remove unwanted items from this menu. Click on the Start button and select Run. Type in 'regedit' and press OK. Navigate to the following key:
You'll see a number of subkeys under the 'MenuExt' key, each of which represents one of IE's context menu items. Simply delete any you don't want anymore.