sorry for the late reply
can you tell me of this version please..
http://www.melauto.it/public/rejetto/hfs.exe
that is an official mirror, and thus it's version 2.2
as reported by fysack, you must "edit html template" than click "import".
some templates needs extra steps, often reported in a read-me file.
in version 2.3 things will be easier, you can just drag and drop the template file (extra steps will be automatic).