OK, I am using Arcsoft 5.0.70.24 & that set up all the correct server settings etc automatically when I installed it. Some of the older arc versions did not set everything correctly & I had to manually set some stuff, but that version was all set from the get-go.
After I flashed to nueROM3, I installed dcd's vz carrier cab & then the arc cab & my MMS has worked fine ever since.
I hope this helps, if not feel free to PM me & I'll try to help.
~John