How to Create a New PowerPoint 2007 Template
If none of the templates that come with PowerPoint 2007 works for your presentation, you can create a PowerPoint 2007 presentation with the Masters. Create your color scheme and then save the presentation as a template.
Here are a few points to remember about templates:
If you want to make minor modifications to one of the supplied templates, open the template via the Open command. Then, make your changes and use the Save As command to save the template under a new name.
You can also create your own PowerPoint 2007 presentation templates complete with skeleton slides. Just create the template as a normal presentation and add however many slides that you want to include.