I had some X-rays and an MRI done and they gave me the images for them on a CD. The images are in a format used by the diagnostic imaging industry, DICOM. I downloaded a free DICOM viewer to view the images and it works very well but if I click on the file directly in the folder I get the pop-up window asking what program I want to use to open the file every time, even though I have opened several of the images using the viewer. In previous versions of Windows it seems like there was a way to permanently associate a particular file type with a program so when one would double click on any file of that type it would always open with that program by default. Can't figure out how to do it in Windows 8.
TIA
J.