Hi! you might have to use Internet Explorer, but you can convert pictures if they are opened in "Photo Gallery" When the photo is opened in Photo Gallery, click on the little tab "Make a copy" Then when "Save as type" appears, select the choice from the drop down menu that includes JPEG. You will then get the picture saved in JPEG as well as in the original format. It will appear as a copy or the file number will show with a (2) added to it.
Good advice is usually ignored, but that's no reason for not giving it. Miss Marple.