Result from upgrading ROM?

[hockey593]

Hi, i got my TP about 3 days ago, but im not completely stupid to the subject of upgrading roms and what not. I changed my rom for the first time yesterday, and the data wouldnt work, i kept getting the "Error 67 Data Call Failure" message whenever i tried accessing any form of internet on the phone. after trying to update my PRI numerous times, i looked into downloading the Sprint DCD cab file to get my data to work, i tried that and it still didnt work. I tried changing ROMs about 6 more times last night, and it still didnt work. Now im back to the default Sprint Stock rom, still not working lol. My friends internet on his rumor wasnt working either, maybe its the network? or maybe its my phone? if its my phone, any advice or suggestions would be greatly appreciated. Thanks!