22. The computer system of claim 20 wherein said input data string fields also comprise an encryption key associated with said source identifier data string, and wherein said client computer further comprises means for encrypting with said encryption key a user information data file stored on said client computer, said user information data file comprising information regarding the user associated with said client computer, and wherein said encrypted user information data file is assembled within said computer file transfer request word and transmitted to said target server computer.
22. The computer system of claim 20 wherein said input data string fields also comprise an encryption key associated with said source identifier data string, and wherein said client computer further comprises means for encrypting with said encryption key a user information data file stored on said client computer, said user information data file comprising information regarding the user associated with said client computer, and wherein said encrypted user information data file is assembled within said computer file transfer request word and transmitted to said target server computer. 25. The computer system of claim 22 wherein said target server computer comprises means for accessing a lookup table, said lookup table for storing a decryption key associated with said source identifier data string, to obtain said decryption key associated with said source identifier data string, and means for decrypting, utilizing said decryption key, said encrypted user information received from said client computer.