Double clicking a jpg to go to Corel Photo

Hi There,

I posted this topic about Corel x4 and got some answers.  Unfortunately it didnt work because my corel was corrupt.  But now I installed my old Corel 12 and tried to follow the instructions the same way as they told me to do it in Corel x4, but the options are different. 

So..... how do i make the settings so that when i double click on an image in corel 12, it will take me directly to Corel Photo for editing.  Thanks so much.