Solved Compatibility settings for 64 bit applications

Hello, Is there any way to "Disable desktop composition" for 64 bit application using compatibility settings? All 64 bit exe files in my system have grayed out options in compatibility settings tab. Some details: I play World of Warcraft. I used to play 32 bit version and have "Disable desktop composition" ticked in compatibility settings tab. Now I'm switching to 64 bit version, but this...