Nokia has switched to use smaller power connector in newer devices, but power levels has stayed the same.

There is an adapter that chages the old bigger connector to smalles one so you can use all the old chargers with new phones and 770.
The part is CA-44. I got mine with my N90 phone and looking for another one.

What was suprizing that 770 sales package did not include this small, but still very helpfull, piece of hardware.

/JariK