I googled it and stumbled across the exact same problem that somebody else has had, and the people from this site had solved his problem. That was here: http://www.geekzone.co.nz/forums.asp?ForumId=40&TopicId=15622 (I would've added to that thread but its locked!
As I said, I have the exact same problem. I got through the steps one by one, and everything works like it should do and goes perfectly... but it still can't send an MMS!!! All I get is a message saying "Unable to Send. Resend Now?"
I have tried the settings for bnoth my phone (V3x) and a K3.
I'd really appreciate a hand on this one guys..... new baby on the way and would like to send pxts to family and stuff :)
I suppose I should mention that I got sent the settings for the V3x WAP and they worked great. I wonder why the MMS is'nt working!?!?