Smartphone as a Bluetooth Modem for Your OTHER SMA

[Guest pgrous]

I love my SMT5600 on Cingular and I'd like to upgrade to the 2125.

Before I sell the SMT5600 on eBay, I was wondering if it's possible to use my SMT5600 (as a PDA-like device) and use Bluetooth DUNS to access the internet via bluetooth to the 2125 as a bluetooth modem?

I do this today with my iPaq 4705 and laptop bluetooth DUNS connected to SMT5600.

Using the SMT5600 to connect to the 2125 should be similar if it supports DUNS, right??