One doesn't "run html files". HTML files contain data; HTML is not a programming language. If you mean you want to display an HTML file from within your Perl program, the following ought to work:

    system netscape => "file:///home/you/path/to/file.html";
[download]

assuming that netscape is in your PATH.

Or, if netscape is already running, you do something like:

    system netscape => 'remote', 'openURL(file:///home/you/path/to/fil
+e.html,new_window)';
[download]

Abigail