It's easy enough to use the N900 as a 3G modem via BT, by installing the Bluetooth Dial-Up Networking package. What I would like to do, in addition to that, is to connect my N900 to a wi-fi network then use the N900 as an internet access point, again via BT. This way I could
a) Use my BT-only Palm to network via wi-fi, through the N900
b) Use my N800 on sites where the wi-fi router supports WPS, which, for some reason, completely blocks the N800 from connecting whereas the N900 works fine (with the known workaround).