But you should still be able to go the usual GPRS/EDGE/3G/3.5G route.. just go on the network, then ssh or whatever (I use OpenVPN) to your home server. It's way faster than the old GSM/Data mode anyway..

I go online on my N900 this way, and I also go online from my N800 via BT and the N900 (in the latter case I don't first go online on the N900, I just turn on BT. Then I go online on the N800 via its "telephone" setup (which is mapped to my N900). This latter method uses way less data because when you go online on the N900 it immediately downloads a few megabytes for whatever it think it should be doing (check for updates or whatever).