Last month, Microsoft released a special add-on pack for SBS 2011 Essentials to simplify the process of managing Windows 7 client computers in the domain. This add-on pack will let you deploy preconfigured security settings across your computers including things like Windows Update, Windows Defender and the Windows Firewall. It also gives functionality such as folder redirection to SBS 2011 Essentials that is standard in SBS 2011 Standard.
You can download the files you need here.
If you want to take the easy way to get to know this then check out fellow SBS MVP Rob Pearmans blog where he walks you through all the hard bits of getting this running.
Well done Rob for documenting so much of this so clearly.