first I bought the nokia E71 from walmart
then I used the settings for at&t internet settings access point name: att.mvno and thats it for the internet SMS works fine as well
for MMS i used fMMS with the following proxy settings in fMMS
access point name: att.mvno
MMSC http://mmsc.cingular.com
http proxy: proxy.mvno.tracfone.com
port number 80
thats it it should work
internet mms and sms
for fMMS sometimes its trickly make sure the internet is connected not wifi when downloading pictures,
let me know if this works for you.