Samsung A900 Msg Account Plz Help!

Hi thanks for looking! I am trying to register for a pic/video MSG account but I get as far as enter a password and then "fatal error" pops up! My phone company is bell and I CAN recieve and send normal text messages.
Thanks,
Em

I get the same thing with Sprint...and then it directs me to a webiste that had zero user interface, effectively canceling any chance i have of using pic or vidoe mail. Any help from anyone?