Hi, I just installed Vista Ultimate x64 on my pc. Before I installed Vista I had XP Professional on it and Crysis did work great. But now I did a clean install (first format and then install Vista) and the problem is I can't install Crysis now. When I press Install at the autorun my mousepointer changes for a second and I see a little black screen and after 1 sec it just closes and nothing starts. When I go to the DVD and try to install from there it says: 'The version of this file is not compatible with the version of Windows you're running. Check your computer's system information to see whether you need an x86 (32-bit) or x64 (64-bit) version of the program, and then contact the software publisher.' And if I start the file named Crysis.msi then I get this problem: 'Couldn't launch the CD Key tool. Setup will be terminated.' These are the specs of my pc: Intel Core 2 Duo,Boxed, E8400, Socket 775 MSI P35 NEO2-FIR Asus EN8800GT,512MB, GDDR3, PCI Express x16 Team Elite,2048MB, DDR2. PC6400, 800MHz, 2x My processor isn't clocked so it runs @ 3.00ghz and I have combined total of 4gb ram. On XP I could run the game perfectly so I know my pc can handle it. How can I install Crysis??