Hi Jam,
I don't see any immediate relation between potential business idea" or "market potential" and learning HTML (and oh, especially Front Page, which is an HTML editor of the past). Web design is a craft, and as with any craft, unless you're really good in it - your product will be below mediocre. Of course you can learn HTML as a hobby - but if you indeed have an idea that makes sense and has a potential - allow an expert to work on your web site.
Edited 7/7/08 by Logistetica
Edited 7/7/08 by Logistetica