http://www.flyertalk.com/forum/catha...-about-cx.html

A lot of your routing / number of miles questions would be answer on:
http://www.asiamiles.com/am/en/homepage
They do not require you to log on with your membership number.

Doing a bit of research on http://www.cathaypacific.com/cpa/en_INTL/homepage would also answer a lot of your above questions.