Seawolf: I have done inter-line transfers many times and rarely had troubles--however, I have no experience with Korean Airlines before. Make sure they tag you all the way to TPE to start with. And let the gate agents know that you do not have intent to enter Korea. They should be able to arrange someting to get you around all the immigaration and tax stuff--you won't be the only one. If you fly Business or First, ask a concierge to meet you when you land in Korea. Happy travel.