handle.pl
use CGI;
use strict;
my $cg = CGI->new();
my $fname = $cg->param('first');
my $lname = $cg->param('last');
print "Content-Type: text/html\n\n";
print <firstname $fname
lastname $lname
HTML
handle2.pl
use CGI;
use strict;
my $cg = CGI->new();
my $fn = $cg->param($fname);
my $ln = $cg->param($lname);
print "Content-Type: text/html\n\n";
print <firstname $fn