[Psychobaby]

When you open IE and you have a phone that is flashed to Cricket there is a string generated in the registry that prevents mms from sending or downloading so one way to fix it is to simply use a different browser once you have the settings right. Another is to find out if someone has made a Cricket carrier cab with mms configured already as well as the fix to keep that string from generating everytime IE is used. Or you can go into the registry and delete the string each time you want to send mms after using IE...I did this with my Apache and it was a royal pain in the a$$! I don't suggest this one lol!
Ryanmoguls cabs he made for cricket worked great on my touch pro that I flashed to cricket. But as Courtney asked what type phone are you asking about?