You add the series that you like to get wallpapers for...
If you want wallpapers for all series, you can use the wildcard character => *
So, for example, if you want wallpapers from all the gundam series and code geass, you would add to the list:
Code Geass
*Gundam*
Then you click save settings and the program will search theAnimeGallery.com for wallpapers that fit your screen from the selected series and put it as your wallpaper.
Then, the timer starts counting, and when it reaches 0, your wallpaper is cycled again...
You can set your cycle frequency as low as 10 minutes and as high as you want...
If you have any other questions, you can ask here, on the forum thread for the program or go to the official site and check out the F.A.Q.s
I hope you enjoy the program!