I suggest a study of the LWP - Library for WWW access in perl.

Here is a short quote from the docs:

The libwww-perl collection is a set of Perl modules which provides a simple and consistent application programming interface (API) to the World-Wide Web. The main focus of the library is to provide classes and functions that allow you to write WWW clients. The library also contain modules that are of more general use and even classes that help you implement simple HTTP servers.

Most modules in this library provide an object oriented API. The user agent, requests sent and responses received from the WWW server are all represented by objects. This makes a simple and powerful interface to these services. The interface is easy to extend and customize for your own needs.

And also from the docs:

  # Create a user agent object
  use LWP::UserAgent;
  $ua = LWP::UserAgent->new;
  $ua->agent("MyApp/0.1 ");

  # Create a request
  my $req = HTTP::Request->new(POST => 'http://search.cpan.org/search'
+);
  $req->content_type('application/x-www-form-urlencoded');
  $req->content('query=libwww-perl&mode=dist');

  # Pass request to the user agent and get a response back
  my $res = $ua->request($req);

  # Check the outcome of the response
  if ($res->is_success) {
      print $res->content;
  }
  else {
      print $res->status_line, "\n";
  }
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Good luck and post your code when you get it working!

use strict;
use HTTP::Request::Common;
use LWP::UserAgent;

my $ua = LWP::UserAgent->new;
$ua->request(POST 'http://somewhere/foo.cgi', 
    [foo => "bar", bar => "foo"]);
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