Hey guys,
Thanks for all the help! I wasn't planning on doing the Africa OneWorld continent, just the Europe Oneworld continent which includes Morocco and Egypt. Looks like I will need to use my free trans-atlantic flight from SA - Madrid, then hopefully down to Cairo or Casablanca from there. After that, I will try to get a flight to Athens.

I read through the Oneworld rules, but didn't see any restrictions regarding surface segments. Why would they not allow me to pay my own way by train, ferry or bus to another city and fly out from there? (ie. fly into Athens, train/ferry to Vienna and fly out from there)

I see that I am allowed 4 flight segments per continent. What exactly does that mean? ...that I must have all direct non-stop flights? What if I were to fly from Tokyo - Bangkok, would that count as one flight segment or two since there's an hour stop in Hong Kong?