I can handle UnrealEd, it's Maya/3dsmax that I can't and that makes mapping for the Unreal engine unattractive to me since you are screwed if you want to be inventive and can't create own static meshes. I think it will come the time when all mappers need to have skills in modeling progs, I just refuse to believe that this is already now
Oh and concerning the other topic:
http://www.planetunreal.com/architectonic
http://www.leveldesigner.com
Both good sites for tutorials and the forums are great for getting answers on UnrealEd related questions.