Hello, I've noticed some people are having trouble setting up iCloud, similar to the App Store in Lion. Well, I've discovered a solution 1. Obtain your DSDT. If you don't have one, go here to download one. You'll need an account, I'm afraid. 2. Drop your DSDT file into /Extra on your Mountain Lion install. Be sure to name it "DSDT.aml" 3. Reboot your system. 4. Check iCloud or iMessage. 5. ??? 6. Profit.