Desktop Authority from ScriptLogic makes the time sync a snap for servers and workstations. There is a configuration element for “Time Sync”, and all that is needed to sync is to browse out to the server or DC that you are looking to sync everything to and easily select which machines you want to sync to that server using validation logic. Validation can be set by domain, OU, subnet, group membership, OS or computer type. Check it out at www.scriptlogic.com/products/DesktopAuthority/