Hi, I've copied some weeks ago Flight Simulator X (FSX) from a friend of mine but it didn't worked (the words were just ??? symbols) so i downloaded fsx deluxe by myself (the one from my friend was the normal flight simulator) but when i wanted to install it, it says that you can not upgrade between the standard edition and the deluxe edition (so the computer thinks it is still installed and i must tell you that i was in a hurry when i uninstalled it so i just deleted the directories and the root keys in regedit), so i started up the setup of the standard edition but it says that something with ??? symbols and then it close. so i started up the setup of the deluxe edition but it still says that the standard edition is installed while i've deleted all the things which are similar to de standard edition (folders, things with regedit etc.) but it doesn't work and i can't run the setup of the standard edition anymore could someone please help me?????