Built-in USB tether: Does it work on Mac?

I'm a bit confused by your last message, mark_bell4 -- are you using the native USB tethering feature, or PDAnet? I'm very interested in using the native USB tether feature on my EVO 4G Shift, but no combination of settings I try in OS X seem to work.
 
Yup - i'm rooted (and new to the TB). I plugged the TB into my mac air and all i get is that error notice. If i click the TB to pass through the sd card - that words, but when I click for it to pass through the mobil internet, nothing happens.

I can of course get it to work over wifi, but I'd prefer usb while at work for ease of charging.

Thanks for the response!