What to do about unlocked phone and prepaid?

[chrisperfer#IM]

Hi

I know this has been written about ad nauseum, but I am hoping this has changed. I live in italy, and have an unlocked iphone (thats how they sell them here.) I occasionally visit the states, and have a go phone account for the purpose. The last time I visited, I discovered that AT&T was actively preventing use of the go phone data plan with iPhones, and were requiring iPhone owners, even those in my position, to buy a 2yr plan. Obviously, this makes no sense for me and I am hoping to find an alternative.

Any suggestions or knowledge of change in policy? I suppose I could jailbreak my phone and then use it on t-mobile, but I am hoping to avoid this.

Thanks a lot.

Chris