im afraid i misunderstand here. correct me if im wrong. u put a html page at hfs root to be your main page. from that main page, u want to access the fileserver. am i correct?
if yes u should do as tuskenraider said. put html page at main root, and all other files/folders inside 1 main folder. at the home page, put a link to "/mainfoldername/
then, right click at home icon at hfs, select "default file mask" and put the html file name, eg "index.htm". your vfs sholud look like image attached