여보세요.
Found a good page explaining how to use Hangul on Mac OS X:
http://www.foolsworkshop.com/120a/koreanmac.html
My wife could not believe it! Hangul has been sitting there the whole time for her (she's a native speaker) but we didn't know to select the American flag up by the clock in the upper right hand corner to toggle back and forth.
By the way I'm new here.
That "hello" up above is my 1st Hangul on this keyboard. Thanks for the keyboard maps. This site rocks. I had no such resource available to me when I was trying to learn Korean some back in my ESL teaching days. There's hope.