I really wish that I had a manual in hand. There's no search option on a PDF and you can't be calling Verizon with every little question
VZ Navigator is an additional charge of 9.99 a month. Here is a link of a PDF manual for your phone.
http://infomanagerdoc.ddc.vzwcorp.com/EQUIPMENT_GUIDE/equipment_guide/WEP/Manual/Motorola/droid2.pdf