According to other freepers, and Wikipedia, you're spot on about Tokyo being all but crushed by conventional bombing. However, Kyoto was supposed to have been one of the targets for a nuclear strike. It was deselected because of its heavy cultural impact on Japan (the cultural and traditional capital of Japan).
Is there a way to look at things recently added to a computer (small things, not entire programs, such as plugins, patches, updates, etc.)? Is there some sort of log?
As for your 'green' question, in Win XP, use the 'search' function, 'all files and folders' click on when was it modified, specify the dates, and see what pops up.