SSH

why when i try to run SSH perl script, i got this error.

The getpwuid function is unimplemented at c:/Perl/lib/Net/SSH/Perl.pm
line 110.

my script is like this
use Net::SSH::W32Perl;


my $host = 'xxx.xx.xx.xxx';
my $ssh = Net::SSH::Perl->new("host", options => [
"BatchMode yes", "RhostsAuthentication no" ]);
$ssh->login('user', 'password');
my ($out, $err, $exit) = $ssh->cmd('cat', 'Hello Net::SSH::W32Perl
User!');

can anyone give me an advice??

.