Virtual Safe   
by Abyssmedia.com   

Virtual Safe is a powerful, yet extremely easy to use file encryption
program. It utilizes strong and time-proven encryption algorithm (AES)
to provide you with peace of mind that your data is safe.
Virtual Safe integrates directly with Windows Explorer, enabling
encryption and decryption of any file with just a one click of the mouse.
It uses one administrator key to encrypt and decrypt all your files, so
you not need to remember multiple keys to multiple files.