Is there a server there? There are a couple things. Can you send MMS first off? does it dial out (#777). you can check the MMS in 3 places.
1. the server, if you are still unable to edit it, its probably ok, but ill show you how to open that up in a sec.
(the reg edit so you can open the settings...hklm/software/arcsoft/arcsoftMMSUA/config/UI/enableserveredit (0 to 1)
2. you can check the registry. You need a registry editor. total commander is free and works fine. the file is below. then go to:
\\plugins, registry, HKLM, software, arcsoft, ArcSoft MMS UA, config, mm1, WspHeader...then
Accept : application/vnd.wap.multipart.related
User-Agent : utstar67kv1
X-VzW-MDN : your 10 digit number
3. make sure you can dial out for data.
-start-settings-connections tabs-connections-manage existing connections:
edit the connection, the number to dial is #777, user name is your10 digit
number@vzw3g.com password vzw
if that doesnt work, back up your contacts/calender and try a hard reset...