This table is not complete by any means, but I thought that it might be helpful to some. Please continue to post if you should come across relevant information. I would've gone further but what I've collected so far is already above and beyond the requirements for the project at hand:

          OS            $id  $major   $minor
     -----------------  ---  ------   ------
     MS Windows 95       1      4        0    
     MS Windows 98 SE    1      4       10    
     MS Windows ME       1      4       90    
     MS Windows NT 3.51  2      3       51    
     MS Windows NT 4.0   2      4        0    
     MS Windows 2000     2      5        0    
     MS Windows XP       2      5        1
[download]

Where:

     use Win32;
     my ($string, $major, $minor, $build, $id) = Win32::GetOSVersion()
+;
[download]

"Make everything as simple as possible, but not simpler." -- Albert Einstein