if you have a x window emulation on your windoz box
like exceed or cygwin xfree86 and an x window libraries
on your unix box, you could set you display. see example below
#!/usr/local/bin/perl -w
use strict;
use Net::Telnet;
my $username = "xxxx";
my $passwd = "xxxx";
my $hostname = "xxxx";
#use Net::Telnet ();
my $t = new Net::Telnet (Timeout => 10,
Prompt => '/}/');
$t->input_log('Tempature.out');
$t->errmode('return');
$t->open($hostname);
$t->login($username, $passwd);
$t->print("ksh");
$t->print("export DISPLAY=10.231.14.57:0.0");
$t->print("nohup /usr/openwin/bin/xterm &");
sleep 2;
$t->close;