køre du windows xp ??? og har du powerpoint
for så kan du gøre dette
Open your PowerPoint presentation
Choose File, Save As
In the "Save as type:" dropdown list box, choose GIF, JPEG or PNG
Browse to your My Pictures folder (it's inside My Documents)
Type in a file name and click Save
When PowerPoint asks if you want to export every slide in the presentation, click Yes. When the export completes, you'll have one image file for each slide in your presentation in your My Pictures folder
Minimize or quit PowerPoint
Rightclick the Windows desktop and choose Properties
Click the Screen Saver tab
In the dropdown listbox under "Screen Saver" choose "My Pictures Slideshow"
Click Settings if you want to fine-tune the results.
Voila. Instant (and free) screensaver from your presentation, albeit one that lacks animation, transition and sounds.