Apple's Mac OS X can legally only be used on Apple's Macintosh range of personal computers.
Technically OS X can run on a PC, and many hackers have created "cracked" versions of OS X that will run on a PC. The reason it does not is because Apple requires OS X to be run on "Apple Branded Hardware".
Os X is the operating drive on which a Mac and any apple device functions on. When there is an Os X on a PC it means that it is compatible with devices from apple.
To install Apple's Mac OS X you agree to only use it on hardware built by Apple and so it is illegal to use it on other platforms.
You'll have to get a specific version available on the Mac OS X platform, unless the CD that came with the CD says it also works on OS X (such as Spore).
I can't understand your question.
To comply with the legal agreement you agree to when installing Mac OS X the PC needs to have been made by Apple.
Xbox 360, PC, iPhone OS, and Mac OS X
Mac OS X - legally. Some people have altered the code in Mac OS X so that it can run on PC hardware (Hackint0sh)
No. iChat is only written for Mac OS X.
Of course cannot
The .INK file type is associated with 'Tablet PC' by Microsoft Corporation. There is nothing for Mac OS X that can use these files.
Games labelled PC will require the Windows operating system. The MacBook uses the Mac OS X operating system and so games designed for PC/Windows computers will not work on a Mac. You will either need to purchase a version of the game designed for Mac OS X or install the Windows operating system on your MacBook and then use the PC/Windows game.