[Mobilepartners] AT&T wireless mobile broadband devices

[Helen Rose]

I have a user that needs a mobile broadband device. All of my other  
users in this situation have Verizon devices (whether the PC cards or  
the USB models), but this particular user will travel internationally  
and thus need an AT&T device.

Does anyone have experience with: AT&T USBQuicksilver or AT&T  
USBConnect Mercury, particularly on a Mac?

Thanks!

--Helen