I downloaded a program in windows xp pro for a nikon coolpix camera that I recently purchased. The program loaded on my pc, however, in the left hand margin the Picasa shows in the drop down menu, however, when I click on it i receive a square with the TIFF wording on the window screen. I do have Picasa on my pc and do not know why I am not seeing pictures in jpeg? Did I miss something when I downloaded the program to my pc?