for web:
apn : att.mvno
username: blank
password: blank

for mms:
acess point name: whatever you want but i have AT&T MMS
mmsc: http://mmsc.cingular.com
username: blank
password: blank
http proxy: proxy.mvno.tracfone.com
port number: leave it blank, and it will add 80 by itself later, i tried adding 80 myself and it didnot work very weird so i reset the settings and then left it blank, tried again it worked and when i went back to look at the settings 80 was added.