Hi there, I would like to upgrade my SCCM 2007 R3 Site server to Windows 2008 R2 (from 2008). We run a small site (only 2 servers, one does the software updates, the other is the site server). Does anyone know if any steps/gotchas of actually upgrading the OS with SCCM2007 already installed? THanks for any guidance and/or pointers. Dman