Windows Home Server Power Pack 1 will be automatically downloaded to Windows Home Servers through Windows Update if Automatic Updates is enabled on your home server or you choose “Update Now…” from the Settings tab of your Windows Home Server Console. If you want to install Power Pack 1 before it is available on Windows Update, you can download this update package and then manually apply it.
Download - http://www.microsoft.com/downloads/details.aspx?FamilyId=1A6AEF46-DB57-401F-814F-6EFA26E7A1E8&displaylang=en