[edited from support email]

I have several hundreds of pictures that are all different sizes that I want to show all the same size in a serial display. How do I within the input file tell the program the desired dimensions of display? I know that with video clips I can simply add the dimensions to the end of the file (i.e., _mymovie.mpg (320x240)). However when I apply a similar approach to the image files (i.e., mypicture (320x240) or mypicture.bmp (320x240)) it simply displays the above names as the image instead of the actual image.
Any suggestions other than resizing all of my pictures?