you can adjust your program execute setting from within windows (which i assume you are using). In windows XP:
right click on the file (photo.jpg or whatever) a small windows will open, click on OPEN WITH>
then select CHOOSE PROGRAM
from there u can select the program you wish to use, be sure to check the box so that it uses that program for the next time you open these type of files.
this process MAY not work with other version of windows, in case....the long version...
If you're not using XP:
open any folder, then go to:
TOOLS (on the top)
a small window will pop up.
click on the FILE TYPES tab on the top.
then look for the file format such as .jpg and change the execute setting to the program you want to use.
//hope this helps. peace.
i'm out like a trout wit' a blunt in my mouth! peaaaceeeeeee.