Your implication is quite correct Calum, I should have made it clear, that as far as I am aware it is Windows and Mac. However, I believe there was some development for it for Unix, but I am not up-to-date on this, and the unix stuff is only hearsay, and that was why I sought out a link for the software, to help clarify the situation, and let people judge for themselves.
I should report back that the older versions have been decribed to me as 'buggy', which does not suprise me in the least, anything linking Mac and Windows seems bound to be tied up in bugs as those companies will never see eye-to-eye. I have not had problems, but then I never used it extensively, something that may actually happen as the company I now work for has Macs and Windows, unfortunatley they are dropping the Mac stuff, slowly.