Well, there's always the LWP moduleset but try WWW::Automate instead :)

#straight from POD
use WWW::Automate;
my $agent = WWW::Automate->new();

$agent->get($url);

$agent->follow($link);

$agent->form($number);
$agent->field($name, $value);
$agent->click($button);

$agent->back();

$agent->add_header($name => $value);

print "OK" if $agent->{content} =~ /$expected/;
[download]

It's usually used for testing, IIRC, but can be used for stuff like submitting too :)

Greetz
Beatnik
...Perl is like sex: if you're doing it wrong, there's no fun to it.