#!/usr/bin/perl  
use warnings;
use strict;
use Win32;

my %versions = (
    0 => {'' => {'' => "Win32s"}},
    1 => {
        4 => {
            0  => "Windows 95",
            10 => "Windows 98",
            90 => "Windows Me"
        }
    },
    2 => {
        3 => {51 => "Windows NT 3.51"},
        4 => {0  => "Windows NT 4"},
        5 => {
            0 => "Windows 2000",
            1 => "Windows XP",
            2 => "Windows Server 2003"
        },
        6 => {
            0 => "Windows Vista or Server 2008",
            1 => "Windows 7"
        }
    },
);
my ($name, $major, $minor, $build, $id) = Win32::GetOSVersion();

print $versions{$id}{$major}{$minor};