to get this for my "desktop" background and actually thought it would just appear there after the download
No problem. Extract the archive to a folder. (Put the folder somewhere nice and sensible and permanent like your Pictures folder...so it's always there if your wallpaper changes and you want to change it back.)
Enter the folder and set the folder view to "Thumbnails" (right-click
an empty space in the folder, go to View > Thumbnails
) if it isn't already. Then right-click the wallpaper that matches your screen resolution and click "Set as background." And you're done.
If you don't know your screen-size then right-click your desktop
then hit (in Vista/Se7en: Screen Resolution
) (in XP or older: Properties
then click the Settings
tab in the Display properties
window). Then look in the window (any OS) under the nice-looking monitor preview the slider option and your current screen resolution as "1024x768" or whatever.
I enjoyed making these things, I wanna be sure that people are using them and can use them. But thank YOU for your interest, dude.