Just in case any one is looking for info about ppc6700 and sharing inter net over wifi on sprints network. i can confirm it works with the n800. It is soooooooo much faster than bluetooth. And wm6 is available on this phone finally!!!!

i used a cooked rom i built with the kitchen
http://forum.ppcgeeks.com/showthread.php?t=11074

but if you want you can use the pre-built rom from here
http://forum.ppcgeeks.com/showthread.php?t=7671

or a clean version from here(no extra software)
http://forum.ppcgeeks.com/showthread.php?t=9841

then use this program to set up the connection.
it also works as a router with nat!!!!
http://forum.xda-developers.com/showthread.php?t=341398

set up the n800 in ad-hoc. I could not get dhcp to work right on the n800 for some reason. You might need to set a static ip with the dns and the gateway as the ip address of the phone.
sprints dns might be better, you can find it here
http://www.sprint.net/index.php?module=faq/dns