Go to my computer. Right click the drive to bring up the menu. Click properties. Go to the hardware tab. Click the drive in the list and click properties.
The drives hardware properties will pop up now. You can also get to here by right clicking my computer and the 'device manager' tab if you DONT have windows xp.
Here there should be a tab called 'DVD region'. It is self explanatory. But NOTE THE WARNINGS IT GIVES YOU!