I"ve just downloaded and installed this program:
http://www.parallels.com/uk/ on my Mac. (the 14 day free trial, as I"d like to see how stable it is before purchasing it).
It works a treat. Allows you to launch the APAT room within the Mac environment - in it"s own window (not inside a pesky "Virtual Machine" window).
Note: You do also need an original copy of Windows for it to work. But, it"s cheaper than buying another laptop.
Going to test it tonight by playing some STTs.
Note: We will be launching an APAT Mac client. Hopefully in late 2012, or early 2013.