Mms working with sec. Unlocked cdma tp2 on gsm network!!!

[Teej53214]

I am having the same problem.. I have a US CELLULAR TP2... I am using the newest NRG rom (Energy.RHODCDMA.29020.Sense2.5.Cookie.2.0.May.15) ... I am using a small GSM provider in my part of the country (Airfire Mobile). My phone is unlocked and I have been using it for 1yr+ using an older NRG rom.... I was always able to send an MMS, but never receive (as others have had)... I flashed my rom this morning and went about setting it up.. Internet is working 100%, etc... But when I went to change the MMS settings, like described above, it shows Sprint (instead of VZW) but my ability to edit or add new is greyed out... I do not want to have to install another rom if I can avoid it.. I also do not need my phone set up for AT&T's settings.... Any advice? Thanks in advance