For an overview and step by step guide, see: http://technolux.blogspot.co.nz/2011/02/adobe-direct-download-links-less-akamai.html
For the download, take the RoboHelp 9 link and simply change the '9' version number to '11'
Thank you for the information. I did try the download, making the change from '9' to '11', but received
HTTP ERROR: 404 /support/downloads/dlm/main.jsp
Still looking for a way to download RH11.
Again, thank you for the suggestion.
It took a few calls to support (during the first of those calls I was told I had to go through the forum), a few transfers, and plenty of waiting to find someone who could look into the purchase order, but I eventually got what I needed. The fellow who was finally able to help me was fantastic - very courteous and went the extra mile.