Each time I hear that 'head of household' expression, I want to bash a GB member's head on their desk. If they want so much to live in a Conan the barbarian fantasy, I should be allowed to help go all the way.
As for WTLibrary, no Mac version. It's probably developped in Visual Basic anyway...
Your best bet would be running it through the free Wine or, if it hasn't been ported to OSX, Crossover, which is the commercial version. Both are programs that allow Windows-only software to run on Linux and Mac, so you install one of them on your Mac first, then you pop in the WTLibrary cd and install it through it.
Else if you've got a Windows license around you can install the full Windows in Virtual Box or VMWare, but that's more complex and not as convenient.