All of the information gathered on a form won't amount to much unless it is sent somewhere. Form responses can be saved to a file, saved to a database, sent to you via email, or sent to a form-handling program on a Web server.
When a form is created in FrontPage, it is set up to save responses in a file named form_results.csv in the site's _private folder. CSV stands for “comma-separated values,” and it's a text format that can be read easily by Microsoft Excel or imported into a database. (You also can take a look at it with a text editor such as Windows Notepad, although it'll be hard to read that way.)