reverse internet sharing

[stevp1]

Just got XP tethered to my new Blackjack II. downloaded ATT connections manager and now have blazing fast conn in XP. Is there a way to share that with OSX? I have looked and there doesn't seem to be a good way to tether OSX to the Blackjack directly (off topic but suggestions appreciated).

So is it possible to get that tethered connection back to OSX?

thanks all!