I had this same problem on my laptop. Very irritating. I followed the helpful post instructions on http://www.mcse.ms/archive64-2004-8-945860.html This fixed my problem. THANK YOU Mike!!! The short text of his post is: Check if those PC have DivX codec installed. If so, go to the following in "regedit" & remove the "DivX" entry: [HKEY_CLASSES_ROOT\*\shellex\ContextMenuHandlers] Yahoo.