If you want to set that as your default, the simplest way is to just right click a .jpg go to the "Open With" option, then on the bottom of that is the Set default program. Click that and it will bring up a menu where you can set the default programs for that type of file.
Does anyone know how to change the default program (Microsoft Image Editor or something like that - typing from a Macbook atm) for opening image type files to the Preview program that you usually get when you right click on an image type file.
In XP "Preview" was an actual program that you can search and set as a default program to open image type files. But in Vista I was not able to find anything related to preview. Thanks for the help!