Problem:

Is there a PDF version of the documentation available for Net Express v5.0

Resolution:

Regretably no.

As an alternative you can use the online documentation provided with the product or use the web based documentation that is available from the following link;  http://supportline.microfocus.com/productdoc.asp

The direct link to the Net Express v5.0 documentation is;  http://supportline.microfocus.com/documentation/books/nx50/nx50indx.htm