TMI file

My cell phone carrier is T-Mobile, and the particular phone model I have (Samsung something) shoots videos as a TMI file, so the person on the receiving end must download a specific program in order to view it. I've sent my videos to my computer and am able to watch them myself through that program I've downloaded, but I'm wondering if there's a program out there that will convert the TMI file to a more common video file. I'd like to upload my videos to MySpace and do a few other things w/ them, but I can't seem to find much info out there about converting this stupid TMI file that my Samsung uses. Anyone have knowlege of this? Thanks for any help!