Thanks that did the trick, not all aircraft are showing (e.g. grould traffic) but it's showing something now. Thought I'd done everything, guess need to go read the Traffic Global manual again.
Do you know if for ground traffic it only shows those that are "taxiing"? I can see ground traffic in P2A at far off airports but not the one I'm at. I'm guessing if parked, it means there transponder is off so won't show on TCAS.