I think Falk is wrong. *runs away*.
Macs are PCs in shiny boxes, so to make the client work on a Mac, erase OSX and install Windows. You will then be able to use the client. It will still be a "Mac", just one that isn't running OSX as it's operating system.
My Mac mini runs Windows 7 (only), so I know it can be done, and Apple helpfully provided all the Windows drivers needed for their hardware on one of the install DVDs (possibly filed under something called bootcamp, from memory).