yes you can. you can get a Verizon unlimited broadband for $59 a month and be very fast, or use the 815 as dial up modem to an ISP and use airtime minutes.
Pair the two, go to start settings connections. make new modem connection, use bluetooth phone you paired, for number to dial enter number for ISP your user name and password and save. For Verizon Broadband the number to dial is #777 the user name is your phone
number@vzw3g.com and password is vzw. I use it all the time, works great and quite fast. :) even gets calls while on line.