After tethering my Nokia N95-3 to my Macbook Pro over Bluetooth, here are hte settings I used to get my Nokia N95-3 running on the ATT 3G network to be a modem for my MacBook Pro.
Didn't need to download any scripts at all.
It just worked.
Note:
Account Name: WAP@CINGULARGRPS.COM
Password: CINGULAR1
via Bluetooth tether N95-3 to Mac OS 10.4.10