MMS help...

[Gee]

hey guys i have a problem. I just got a new PPC 6700 and was in the process of hacking and tweaking to my liking, everything was going fine until MMS. This isn't my first time installing this so im not a noob, hence the reason why im baffled as to why it doesn't work. Anyway i can send pics but when i recieve pics i get the message saying :The file'http://pictures.sprintpcs.com/?........MMS' cannot be opened. Either it is not signed with a trusted certificate, or one or one of its components cannot be found. You might need to reinstall or restore this file." Now i have reintalled this and followeed all the instruction exactly.. but i cant get it to work.. someone please help.