Potential newbie

I managed to get a copy of Qnxrtp CD off a friend, but I think it is
corrupted. Package manager refuses to work on the 2 packages it can see, it
returns error code=2. I tried command line tar (complete newbie with unix!
took 2hrs to find out how to do this). It also reported an error (unexpected
Am I correct in thinking it is corrupt?
Is it possible to buy CD from UK or do I have to order it from web site. I
don’t think my ISP will allow a 16hr download of the image
That GUI is gorgeous. I’m desperate to get it all working.
Thanks in anticipation