mixture if it takes a wannabie to down grade there PC to windows XP to get a piece of software working that they want for training to be a pilot that is exactly what they are going to do.
They won't care its unsupported as long as they can use the CBT.
As I suspect that the CBT that most wannbies have got their hands on from Boeing and Airbus isn't exactly purchased I suspect the level of support will be nill.