Holy crap! I just answered this very same question in another thread maybe 5 threads above this. How many times is this going to be asked? I'm too lazy to check which thread was first and I will admit that the XDA search feature is a bit annoying to use, but for FFS! Now I see why the older members are always bitching.
That said, I will add substance to this post. I just switched to Go SMS Pro this morning and have to second the suggestion for it. It has been working fine for MMS and they come across just as expected.