And if the OW Explorer is not what you want, or can't make it work for you, then take a look at the Global Explorer fare, which is distance based, and permits you to return from HKG back to Europe, without having to go RTW.

Rules and fares:

http://www.hardlink.com/~markdu/OWFi...lExplorer.html

And here a very cool interactive tool for planning:

http://www.travelbag.co.uk/roundworld/interactiverp.asp

(wouldn't it be great to have something similar for the OWE?)