[dvdvol] another loop-hole plugged

If a person changed the capitalization of their e-mail address, they could successfully check in two or more requests with the same address. No more. Actually, I put some code in to prevent this when I first wrote the program, but apparently it didn't work. Thanks! Sincerely Aaron Cannon -- E-mail: cannona@fireantproductions.com Skype: cannona MSN Messenger: cannona@hotmail.com (Do not send E-mail to the hotmail address.)