This just came up the other day, see Win32::OLE made easy! and Scriptomatic.

Here is the code it produces for Win32_DisplayConfiguration:

use strict;
use Win32::OLE('in');

use constant wbemFlagReturnImmediately => 0x10;
use constant wbemFlagForwardOnly => 0x20;

my @computers = ("MYPC");
foreach my $computer (@computers) {
   print "\n";
   print "==========================================\n";
   print "Computer: $computer\n";
   print "==========================================\n";

   my $objWMIService = Win32::OLE->GetObject("winmgmts:\\\\$computer\\
+root\\CIMV2") or die "WMI connection failed.\n";
   my $colItems = $objWMIService->ExecQuery("SELECT * FROM Win32_Displ
+ayConfiguration", "WQL",
                  wbemFlagReturnImmediately | wbemFlagForwardOnly);

   foreach my $objItem (in $colItems) {
      print "BitsPerPel: $objItem->{BitsPerPel}\n";
      print "Caption: $objItem->{Caption}\n";
      print "Description: $objItem->{Description}\n";
      print "DeviceName: $objItem->{DeviceName}\n";
      print "DisplayFlags: $objItem->{DisplayFlags}\n";
      print "DisplayFrequency: $objItem->{DisplayFrequency}\n";
      print "DitherType: $objItem->{DitherType}\n";
      print "DriverVersion: $objItem->{DriverVersion}\n";
      print "ICMIntent: $objItem->{ICMIntent}\n";
      print "ICMMethod: $objItem->{ICMMethod}\n";
      print "LogPixels: $objItem->{LogPixels}\n";
      print "PelsHeight: $objItem->{PelsHeight}\n";
      print "PelsWidth: $objItem->{PelsWidth}\n";
      print "SettingID: $objItem->{SettingID}\n";
      print "SpecificationVersion: $objItem->{SpecificationVersion}\n"
+;
      print "\n";
   }
}
[download]

I'm assuming (hopefully not wrongly) that you can set these properties as well as getting them.

--
John.