Hi Mark, thank you for your comment.

I have had a look at the link that you've provided. I'm presuming that when they say make sure its not attached that they are referring to the Parallel dongle? In which case, yes I have moved it.

I've tried adding it whilst the machine is offine and online. Its still not showing.

I can see the Parallel adaptor in device manager but have no way of knowing if the machine sees the dongle?

I know some of the newer dongles have a licence element that links the dongle with the PCs hardware. I wasn't sue if that is the case here?

AutoDesk can't tell me if its compatible with Windows 7 which is part of the problem.  The software is actually from 2004 or something... 

Kind Regards,