I have found source code for a linux version of a utility on sourceforge DOT net that does what we are seemingly looking to do... I'm thinking with a bit of retinkering, a mac version of this utility could be resolved. the project is called "xmblackerry". Anyone know how to port linux apps?
I am sure I am not the only one to disapprove of the "solution" posted (winner of Alex King's bounty).
If you can plug an 8700 into a USB port in windows and use it as a modem, there is no reason to need a proxy, which is REQUIRED in the "solution" posted above.
After I move cross country next month I will dig deeper into this issue and when I come up with a solution, it will be open source. I am sure a lot of people won't mind that they will have to tether their BB in order for a FREE solution.
T-Mobile 8700g - 12" Powerbook G4, OS X 10.4.5