Cingular provides a list of handsets under LaptopConnect Support that are compatible via bluetooth with their Communication Manager v6.7 for Windows.

That doesn't necessarily tell me anything about EDR DUN or 3G.

LG
CU320
CU400
CU500
Trax

Motorola
RAZR V3xx
RAZR2 V9

Nokia N75

Samsung
A717
A727
SGK-ZX20
SYNC

Now I just need to figure out which ones support support EDR DUN & 3G and ideally are physically small.

Mike