Fanks G
Also - is it from World of Warcraft?
I'll just mention it as an aside...
Blizzard might not be happy about your use of the textures even if they are screenshots from ingame then edited... they remain the interlectual property of Blizzard... map layout is also covered by interlectual rights although theres nothing to stop you make a map thats themed, even closely on another existing map... but you'd have to make the textures from scratch.
Fan movies are covered differently.
As someone who has done commercial level design I know your skating on thin ice - Blizzard may consider it more effort to chase up than its worth or not even care but you never know - legally all the rights still belong to them.
You would deff. be in the poop if you sold anything... most you'd get for using their textures/assets in user made content, even for another game is a cease and desist. Some companies are more anal about it than others, unfortunatly due to issues related to "setting a legal precedent" sometimes they have to take action when they aren't really too bothered... can be a bit of a pain sometimes.