Sounds like you've got a misunderstanding.
Point the form you are submitting to the cgi script you want to run. E.g. <form action='foobar.cgi' method='post'>
Then make the script parse the form inputs and print out an HTML page. E.g.
# this is foobar.cgi
my $cgi = new CGI;
print $cgi->header, $cgi->start_html;
print "You entered " . $cgi->param('form_input_name') . "<br>";
No need to use system.
Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
Want more info? How to link or
or How to display code and escape characters
are good places to start.