I have a wireless card for my laptop and I can connect to the internet out of my home.

What do I need for the n800? It is surely sleeker than a laptop and I like gadgets as any baby boomer would.

-- Do I need a new phone with blue tooth? A new phone account or can I do it with the same At&T or SPRINT (don't remember) service?
-- What are the steps for a connection?

Basically, will it cost me addional money to connect out of home???
At home I have a router and wireless LAN, so it would not be a problem

Please advice, young ones.