Penske:
You'll find the payscale in the 1999 CoS document, which has been amended at the end.
Ashcroft:
A-scale is for pilots hired pre-1992 (if I recall correctly), and B-scale is for pilots hired since. Starting in 2008, if you're hired as a First Officer (as opposed to Second Officer) you will start on the Unified-FO Scale.
There are lots of changes in CoS 08, which include such deal breakers as no bypass pay and other jewels, but I am very unqualifid to answer those. If you seach for it here ("CoS" is too short to search for, try "conditions of service") you should find more info.
I think a lot of people would agree that Cathay used to be a world-class airline as far as how they treat their crew, but just like the airlines in the states, it's a race to the bottom to cut all the costs that they can.