I'm using Maemo 5 on a nokia n900, and I'm having a problem with making outgoing GV calls. In my GV account settings, I have my screen name set to the number of the n900. Should it be set instead to my GV number? I also get different behavior depending on how I format the callback (i.e. 650xxxxxxx as opposed to +1 (650) xxx-xxxx). What is the correct way to input the number?