Re:
Hello,
In general, there is no PAL or NTSC of computers (apart from signals outputted to the TV anyways)...
...i've probably confused you already, but simply put...Yes they are all compatible. Compatibility doesn't vary from country to country, but rather across computers. So you'll just have to take note of things like VGA, DVI, PS/2, USB- your computer's ports, and make sure your PC is compatible with specific hardware.