into your web - best to create a new folder for it. Call the folder what you like ('download'perhaps), and then put a link to the file on your web page. You can use a text hyperlink, or in FrontPage, a hover button. A visitor's browser will initiate the download dialogue automatically when the link is clicked.
Now for some advice. Make sure that you provide a detailed description of the file on the page where you place the download link. Nowadays everyone is very security conscious, and most people will be wary about downloading anything unless they know exactly what it is. Scan your download file with your anti-virus software before you upload it to your web-server, and tell people that the file is virus-free - they'll appreciate your thoughfulness.