[marcus330i]

Help me, I'm a cell phone moron.

Here's what I've got:

I'm a charter customer on the old ATT Wireless GSM network...which is now Cingular. My rate plan is grandfathered in at $99/month for unlimited use....I mean really unlimited....as in 10,000 min/month primetime if I need it...and once in awhile I do. Free long distance and roaming...etc etc....the darned plan is $99/mo no matter what. Cingular has informed me that if I want a Treo or Blackberry phone I will have to change plans and that's going to cost me 1-2 THOUSAND dollars/year more for those calling plans......so that's not going to happen.

So I want to purchase a GSM phone and have Bluetooth with a compatible address book if possible. Right now my Nokia 3250 works in my 330 (w/I-Drive) but there is no address book. I'd prefer another Nokia with Bluetooth that's GSM. The Nokia 6310/6310i is listed at BMW's Bluetooth site as being compatible.

Questions:

I want to get a BMW compatible phone and put the SIM card & memory card from my current Nokia phone into it. Do I need to get a Nokia phone or will my SIM/memory card work in other phones?

I understand that the phone needs to be unlocked to the ATT/Cingular network. Are there places that can unlock a phone or sell me an unlocked phone and warrant that it will work?

Thanks in advance for any help. If there are any So Cal or San Diego cell phone gurus out there I need your help.