I searched the forum using Google and came across a few threads like http://www.sitepoint.com/forums/show...-for-Galleries and http://www.sitepoint.com/20-gorgeous...allery-themes/
Now I need to ask: would you recommend anything else than wordpress (it's kind of hard to create a design for it, i am not a programmer) and if yes, what?
Second of all, is it possible to mass add the wallpapers to wordpress? Adding them one by one wouldn't be practical.