1) open HOU but let its windows cover only about 1/4 of the screen

2) open Windows explorer and follow the directory structure to the directory of HOU where the images that you want to open are

for example, if you want to open the images in tracking Jupiter's moons, you would follow the directory structure

C:\Program Files\HOU Image Processor\Images\Images-High_School\4tracking_jupiters_moons\

3) hold the Shift key down and click on all images that you want to open

(if you want to select all the images, use the Select All command under View)

4) click on one of the selected images with the right mouse button, hold, and drag over the partially open HOU window and release the mouse

5) all selected images should have opened in HOU