I have created a home page 'myhome.htm'

and have given a link to a filemaker file 'first.fm5' from this page

like

<a href="first.fm5">First</a>.

I put my home page in web folder and the file 'first.fm5' in another folder named 'hosted' of the site.

when I am run the homepage using URL http://servername/myhome.htm

and when I am clicking to the link

message is coming "File not found"

Why it is ? Any body can help me?

If the second page is in another folder then the html link needs to specify the folder as well as the file name: otherwise the browser assumes thay are in the same directory.

Try href=newfolder/file.htm

Next time, use HomePage's Insert/Link to File command to create the link. At least until you get a better feel for what's happening.