T-Mobile MMS

[jim2561]

Situation:
I am w/ an HD, on T-Mobile, in the US.
I have the $9.99 / month 100 mb data plan (cuz I have wifi about 85% of the time).
I have unlimited messaging (of all kinds) on my plan.
I can connect to edge and browse on it just fine.
Another person on my family plan has working mms no problem.
I put in a friends SIM and it worked straight away, he used mine and it wouldn't work.
I have already tried getting my SIM card replaced.

already tried two cabs from these threads:

http://forum.xda-developers.com/showthread.php?t=394735
http://forum.xda-developers.com/showthread.php?t=395203

Problem:
NO MMS. I really can't figure it out. It seems that no matter what I do, it just never works. Sending gets to 99% (w/ the little icon at the top), but it never ends up going through.
When someone sends me a message...I just don't ever get any notification at all.

I have tried stock roms, cooked roms, I make sure to set my carrier to T-Mobile US, I have checked the internet as well as called CC for the server settings, and even just had my SIM replaced today...still no luck.

Anything welcome,
Thanks,
Jim.