Undo the lock: If you decide to remove the password protection from a file or folder, you have two options. The first is to extract all the contents, either by dragging the file (or files) out of their window or by right-clicking the folder and choosing Extract All (if you prefer the "wizard" approach). Your second option is to open the compressed folder and choose File, Decrypt (in Windows Me) or File, Remove Password (in Windows XP). Either way, Windows will prompt you for your original password
Googled, does that help? I've never dealt with that encription, so I don't really know.