Goto Start ==>Run type "regedit", enter Now you're in the register Delete
this registerkey: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{87D62D94-71B3-
4b9a-9489-5FE6850DC73E}\InProcServer32. DON'T CHANGE ANYTHING ELSE!!! Close
register and restart pc. The problem with the avi's should be disappeard.
Deleting of this registerkey has no further consequences.