Updated to add information about setting up a BlackBerry Model 7250. Please post if you can get your model 7250 working on Verizon.

You must dial phone number "#777" to connect the laptop to the Internet on a CDMA cellphone modem (all 4 digits, and using a pound sign followed by three 7's).

When connecting, you may need to enter a username and password, where ########## is your 10-digit phone number:

Verizon
Username: ##########
Password: ##########@vzw3g.com