Never mind, the units look good. Guess I should open the calculator BEFORE posting so the inside of my mouth doesn't taste like boot? Hmmm... Everything that needs to be done has been said, but two questions pop up. Do you have an initial temperature, and how are you supposed to get the water...
Umm... just by looking at the initial post, I'd have to say, check your units. Especially the units of energy. I don't think that the problem requires knowledge of heat of vaporization at all.