what program that's you mean?? can you mention it?
basically,if can't delete the file, because of..
- don't have a permission
- still have running the program (used program)
like your case, you can't delete the file, and the error is because the program is still running,
going to task manager ( Ctrl+alt+del ) then see the processes one.
if that's still can't help, maybe the program have running some services on it.
you must going to administrative tool, services to stop the services first. then try to delete it.