I am trying to install Office 2007 on XP and during the installation process get the following error message: Setup cannot find Rosebud.en-us\RosebudMUI.msi. Browse to a valid installation source ... I am not sure where to find this file and had assumed that whatever I needed was included on the installation disk. I checked another pc I am using with Office 2007 and don't seem to have this file on there either. What should I do next?