If you belong to Dave Pearson's tech support forum you can see a video tutorial on a 4th axis op and get a bit of email or Skype phone support.
Here's the web site:
http://www.download.sprut.co.uk/Supp...ex.php?act=idx
I have a few post processors for the Tormach from various sources and a couple of them are dated later than the the one you list, assuming that the 08.06.07 date format is European and means June 8, 2007.
At least one of them came from Yuri at SprutCAM and another may have come from Tormach. I can email you the one I've been using, but it is dated the same as yours. You could try one of the ones dated later but I really think you'd be better off checking with Yuri to see which one is most recent and make sure it isn't a "beta".
BTW, the latest build is 5.47 but I've read that it is bug fixes only with no new features. It would be good to get that confirmed by Yuri, though.
Mike