OK, try this Joe. Right click a jpeg you want to open, and choose Open With > then the program of your choice. I have mine open in Windows Picture and Fax Viewer, or you can choose Mozilla or Paint Shop Pro, or whatever graphics viewer / editor you have on board. If you select 'Choose Program' from that box, you can select a program and tick the box to have all files of that type open in that chosen program.
Come back to us if you're still having problems and hopefully somone more technical might be able to help.