Charles Joy has posted a great video demonstration embedded below and instructions on how to use Opalis to automate the updating of Hyper-V Integration Services after you update to Windows Server 2008 R2 SP1.
From Charles post:
Today's Video Topic: Have you recently upgraded your Windows Server 2008 R2 machine with Hyper-V to Service Pack 1? Well, some unique changes to Hyper-V come along with that upgrade. One of these is the need to upgrade the Integration Services (Components) for each of the VMs on your Hyper-V Server. This video shows how you can automate the upgrade of all your VMs utilizing OIS and the available VMM Integration Pack.
You can read the full text of the post here.