Uploading phonebook for T-mobile dash and Verizon Treo-650

We have a 1-week old Prius w/ bluetooth. I have been able to get both the Treo 650 (Verizon) and the Dash (T-Mobile) to sync with the dial and receive functions of the bluetooth. However, I have not found a way to upload phonebook data (even one at a time) from either phone. Is it possible somehow to "beam" contacts? I have tried this and it could not find the Prius.

Any help is much appreciated.