If you attempt to delete a folder and get a message that "This change may impact one or more registered programs," consider that a warning. The Registry still thinks you need some of its contents-often a symptom of an uninstall operation that didn't clean up properly. Before proceeding, search the Registry for the name of the executable file(s) contained in that folder, then delete the key structure that contains the reference to that file. But first, search the key structure for pointers to other keys that may also need to be erased. This can be a tedious operation, so refer to the August Optimizing Windows column
(http://www.winmag.com/library/1997/0801/howto142.htm) if you need further
details or help.