Using UnlockMe is very simple. Just install it; it will integrate into the Windows right-click menu which unlocks the file or folder with one click. Simply right click the folder or file and select Unlockme, the folder or file will be unlocked. You can also unlock files or folders by selecting them from the programs GUI.
UnlockMe is tiny (225Kb) and is compatible with Windows XP and Vista. No further requirement is needed. The software is tested with Virus total and found to be clean. Download it here.