From now on SDM Software is offering SDM GPMC PowerShell Cmdlets 1.0 for free. This version comes with 9 cmdlets for performing GPO management tasks from creating and deleting GPOs, to linking and unlinking them, to modifying GPO security, to backing up and restoring GPOs. After installation you can run them from Start menu or you can add snap-in to your profile file.
Add-PSSnapin SDMGPOSnapInAfter the snap-in is added, you can use 9 new cmdlets.
PS>get-command *sdm* -commandtype cmdlet