The SU can be done, but is NOT very secure deploying it.

Please search and look for posts with regards to the KiXCrypt utility if you really must perform the task in this manner.

http://www.kixhelp.com/Downloads/kixcyrpt3.0b.zip
http://www.kixtart.org/cgi-bin/ultimatebb.cgi?ubb=get_topic&f=14&t=000412