Yes, thanks. I've been told that AT&T would use the Cingular protocol.
The 8525 is using a "cooked" 6.1 ROM, and it has an Internet Sharing applet that shows a PC connection as "Bluetooth PAN" and a Network Connection as "Cingular GPRS".

I'll look for the PAN stuff for the N800 and try it. I haven't seen it in any of the repositories I have connected.

Edit: I'm running OS2008 and all the information I can find (shell scripts) is for OS 2007 :-(

Walt.