Unlocker

                   Unlocker is completely free and will always remain free, which means you can use it free of charge for any purposes. If you are satisfied with Unlocker and want to help Unlocker improve or motivate the development of other quality programs, any amount of donation small or large will be welcome and gratefully appreciated.
                    This award winning software starts by conducting a deep scan of your registry, checking for file extension errors and other registry conflicts. With RegistryBooster you will see immediate increases in performance and decreases in systemt conflicts.

Unlocker is the solution!

1. Simply right click the folder or file and select Unlocker

2. If the folder or file is locked, a window listing of lockers will appear

3. Simply click Unlock All and you are done!

Link : http://www.emptyloop.com/unlocker/