|Hazerlad, You can also go to the link below and download the Free "imgeditor.zip" utility. It will allow you to restore the image file associations to the default XP program which is Windows Picture and Fax Viewer.|
Repair image file type associations in Windows XP
Another section of this utility can also set the default image editor application for all or selected file types in Windows XP.
Change the default image editor application, invoked from Windows Picture and Fax Viewer