It is Vista.
The Properties procedure or renaming it did not work.
The Unlocker program would not run after downloading.
The MoveOnBoot program worked when I selected to delete the CCleaner installation program when I rebooted the computer. Thanks for the suggestions.
After downloading and installing, I can not delete the installation file where I downloaded to my desktop - get an error message: "You need permission to perform this action".
Other installation files can be deleted without this problem.
Suggestions?