People, please search www.howardforums.com for how to tether your phone via bluetooth. In most cases you have to make modifications to your handset BEFORE even attempting to dial #777 and connect online.

This page might help (for KRZR K1m, but other phones employ similar methods)
http://www.howardforums.com/showthread.php?t=1018585

You cannot just take your unmodified phone and connect it to the N8x0's in most cases, especially without a dedicated data plan.