I haven't used Perl personally, but the syntax needed in terms of HTML is:
<form name="name" method="post" action="filename.php">
</form>
To continue on, the method used to collect that information (so as not to display it in the browser address bar) is:
// Basics
$_POST['fieldname'];
// To put in a variable
$variable = $_POST['fieldname'];
// Check if the form has been submitted (i.e. to use in one script)
if(!$_POST['submit'])
{
// Display all necessary code for the first page here
}
else
{
$variable = $_POST['fieldname'];
// More code here
}
The latter example you could use if you wanted to run the script under one file, rather than passing from file to file...
Hope that makes sense,
Chris