Anyone with Cingular able to Roam to T-Mobile within USA?
If so, how about within New Jersey?

I used to be able to register with the T-Mobile tower near by on my Cingular SIM. Last few weeks, I have been unable to do it.

Not my Treo 650, I don't think so anyhow - I tried with a Nokia which have network select. Same thing. I use to have no problem connecting to the T-Mobile tower near by.