i have try it ! i have vista ultimate ,with core 2 duo 2gb memory ati x1950 pro ,i installed fsx and after 5 min its crashed up . the fps were about 20-25, i have called microsoft thy blame the hardwear mfg (intel,ati,realtk,)except themself ! i removed vista out back to xp sp2 pro .now everything runs good . do not buy vista now ! i got it free becouse i have new pc. if u do buy the oem less $$$$, but no tech help from microsoft . u can also use the oem as an upgrade to vista from xp, or do a clean install its a full v. αυτο το διαβασα πριν 5 λεπτα και απογοητευτικα οποτε βλακεις λεγανε στα περιοδικα που διαβασα,το παλικαρι που τα γραφει ειναι απο Αμερικη,με πολλες χιαλαδες ωρες πτησης σε simulator