using Tmo on 3Gs, but can't browse :(

i have Tmobile service with data plan. but after JB and unlock, for some reason, my 3Gs doesn't connect with the data plan. instead it tells me that i do not have a data plan available

i'm on the 3.0 FW. is there anything i need to add like the APN or something like that in order for it to work?

thanks!

 

thank you Vandam! you the man! i thought i needed a username or password.. but now it's surfing on the super fast EDGE network.. lol.

thanks again!