So my solitare just disappeared. I searched for it in the all programs thing and when I clicked on it, it ssaid it couldnt be opened because there was no program specified to open it. I clicked on the thing that lets you decide what to open it with. The box at the bottom that makes everything open the same way was checked but i didnt notice. All the programs on my computer are now being run by windows media center. I cant use any programs, not even mozilla firefox! what did I do and what can I do?????