I wasn't being rude to you, I was just correcting you.
And in response to my good friend zack, the way gaim does it (which is the best way in my opinion), is that while you're typing, when you hit the spacebar, thus signifying the beginning of a new word, it checks to previous word, and if it is mispelled, it turns the mispelled word red and underlined. It doesn't prompt you to fix it, or do anything else obstrusive.
And with the addition of the 'multi-byte editbox' in one of the recent versions, I do not believe it would be too difficult to turn mispelled words red and underlined.
