hey guyz i have bought FLIGHT SIMULATOR X recently but the problem was that my cd rom was not working so i installed it on a another laptop.. and copied the content of it to my computer ... but the problem arises when i purchased PMDG 747 for fsx so when i started to install it . it sayed your registry doesn't show a valid FSX installation location... and my laptop was taken away ... by my roomate for 14 day trip...so no chances for installing it for PMDG on the laptop