what if I want to slipstream other Office 2007 SP1 into the original Office 2007 RTM ...like : Microsoft® Office Language Pack 2007 SP1 Microsoft® Office Project 2007 SP1 Microsoft® Office SharePoint® Designer 2007 SP1 Microsoft® Office Visio® 2007 SP1 I already tried to extract each of the package...but each package contains several files that have same name. So if I copied to the updates folder those file will overwrite each other... Any solution to slipstream all of the SP1 package into the update folder ? Can I create sub folder in the update folder that each subfolder contains each extracted SP1 package? Thanks...