finally something that works. i got my nokia e70 to work to share 3g over bluetooth with my macbook. i followed the how-to over here. following the instructions there i grabbed the nokia 3g scripts from Ross Barkman’s page and used the “NOKIA 3G CID1” script. then to make it work with base (my ridiculously cheap flatrate 3g provider), i used:
telephone number: internet.eplus.de
account name: eplus
now i’m off to wander the streets, connectedly of course.