Another supporter of MSFS (FSX) here..
Had been "simming" for years until I passed my PPL skills test in 2006.
MSFS really helped me with basic IFR training, understanding radio/nav equipment and came into its own when practising cross country nav (with UK photographic scenery installed). I still "fly" it occasionally before setting out to a new airfield and use it to check visual reporting points, noise abatement areas, circuits etc before doing the "real" trip.
I also suffered initially from the temptation to look in rather than out and my instructor was quick to cover the instruments at such times. I quickly learnt to look outside instead..
Best of luck with your PPL - keep a good lookout!
PS: A yoke and rudder pedals are a must for MSFS if you wish to have any semblance of realism IMHO.