You were correct about what my version of FrontPage is called - I have just looked and it is called an Academic version as you thought.
I am in the UK, and I did email Microsoft (USA) asking if my version of FrontPage was a qualifying product for the Upgrade version of Expression Web. But they declined to answer, directing me to ask Microsoft in England. But Microsoft in England will not accept email messages. Here in the UK the full version of Expression Web is around the equivalent of 512 US Dollars, the Upgrade version about 171 US Dollars, a difference not to be ignored.
I take your point, particularly about the floppy disk situation which I had not realised.
Thank you.