1. Start PowerPoint.
2. From the PowerPoint menu choose pptXTREME > Photoshop Import > About
3. Click on the Uninstall button on the bottom of the form.
4. If you have more than 1 version of PowerPoint installed on this computer then click on Only Delete Menus and click Uninstall. 
   If you have only 1 version of PowerPoint installed then click on Full Uninstall, click Uninstall, then goto step 6.
5. Close PowerPoint and repeat steps 1-5 for each version of PowerPoint installed on this computer.
6. Click the [Windows Start] button. 
7. Click Settings > Control Panel. 
8. Run the application Add/Remove Programs.
9. Click Install/Uninstall. Then select Photoshop Import for PowerPoint from the list of applications that can be automatically removed.
10. Click the [Change/Remove...] button to uninstall.