In the past i bought Flight deck 3, then like a fool 4, which crashed 2004and was a pain, and got 5, (you can not say i do not try) but had nothing but trouble and could not get hold of Abacus no matter what, they just would not reply. Recently like a fool i tried again with 6 to go with FSX and it is full of problems and once again Abacus just will not respond to numerous requests for customer support, it really infurates me when they know you need help and that there are problems with their products but just ignore you, so i will erase it , lose more money but will NEVER deal with them again! so be warned.