Or uninstall it....LOL. It looks like what seti said though.
If you double click the pic on the one that shows the type, what program opens it?
If you double click the pic on the one that shows PictureIt, what program opens it? (I'm going to assume this one will be the program PictureIt but just want to make sure)
If you right-click on the PC with PictureIt, choose Open With, choose the same program the other computer uses and check the box at the bottom that says make this default, does it work then?