okay lets run through this. I have an iphone 3g activated and working on at&t. I also have 8 other at&t lines with various plans. I know that if i take one of my sims (the sims are 3g, not not in ipones) from any of my phones and put it in my 3g iphone the iphone works great. I can call the phone number for the sim in the phone and it makes and receives call, shows the right caller ids etc. basically at&t has no idea the phone is an iphone with a different sim. This works even with my $10.00 a month plans. Its kinda cool. So, I just bought a used 2g. I want to activate it, throw in a sim from one of my other phones (NOT my 3g iphone). and get it to work. The 2g powers up and gives the itunes connection pic. Itunes wants to activate it no problem. BUT the challenge i have is that I get to a screen about monthly plans and billing etc. Basically I think at&t will activate it and change my plan. Now if i throw in my sim from my activated iphone it asks if i want to replace my 3g iphone with the current iphone and then still gives me the data plans with at&t...... yadayadayada.... I have no idea of the 2g firmware, I cannot seem to update or access it because itunes only wants to activate it, i have tried quickpawn but it only wants to jailbreak. running windows xp. Any ideas????