I have 850 presentations in PowerPoint 2007. They have had numerous background changes over time. There is now a standard template that must be used. However, I am unable to find a hack or work around to 'set' permanently the background without clicking the 'keep source formatting' option each time. While I am okay with clicking the keep source formatting, I am handing these slides over soon to a person who isn't experienced in PowerPoint and wish to make things easy for them. Retyping or copy and pasting them really isn't an option due to the volume of presentations. Can anyone help?