I am not sure about Alltel's policy on picture mail (MMS), but the 700 is capable if that is what you mean!!
One word about the 700 though...if they offer the 700wx, go with that, it is the same device but twice the memory (the 700 got really short-changed there).
I loaded WM6.1 from a link I found here on this site, http://forum.ppcgeeks.com/showthread...ighlight=WM6.1
and input the following settings (via sms => menu => options... => advanced tab => Manual config edit...) and can now send and recieve MMS on Alltel's network.
Message center number: blank
Email center number: 8080
MMS Gateway address: blank
MMS URL: http://mms-mt.alltel.net/servlets/mms
Network: Alltel Wireless (or whatever your internet connection is called)
I've sent and recieved pics and vid from people on Alltel, Verizon, AT&T, Sprint and T-mobile without any problems.
Hope this helps.
Obviously I can't promise that these settings will help everyone, but I felt it should be known that it works for someone.
PS. I didn't install any arcsoft mms or anything. Just installed the rom and input the settings, then a quick soft reset and BOOM!