I unfortunately bought the Pre-Flight sim from a Ebay seller good price and looks good in their add,what a piece of sh*t you have to make sure you have the lattest drivers for your sound card and direct x9 loaded,then do other adjustments to get it to go.When it is up and running the planes fly to slow and its not my computer it's heaps quick enough for a programme like this.The graphics of the scenarie are good but the planes are crap , its nowhere even close to the Great Planes version I have seen.Don't waste your money.