vintwala said:Hey,
Try going in to the Folder options through Control Pannel. In the Folder option - click on file type tab and scroll down to the file extention that you are trying to edit. Highlight it and click advanced button and then the edit button. The application used to perform action should say this,
rundll32.exe C:\WINDOWS\system32\shimgvw.dll,ImageView_Fullscreen %1
Use DDE should be checked, application should say shimgvw, and topic should say System
Try this and see if it works.