Apple ipod

How I can get my MMS working on my 2G iPhone 3.0 FW, prepaid GoPhone from AT & T?

My original 2G iPhone unlocked and jailbroken. I just upgraded to 3.0 and I want to activate MMS but after download it from Cydia Activatemms2g I may not transform MMS messages or disable the settings. Not There is nothing there … I do not know if it's because I'm on a prepaid (MTM days $ 1) or not? Any help would be great. Thank you. And do not say that the iPhone can not be paid because (unlocked / Jailbroke) if yes prepaid work. I just want to know if the MMS feature working on it as it is available

ATT does not allow the iPhone Apple is in the prepaid service, so you can have different settings

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