Instructions
Turn on your Wii.
Click the ̶0;Wii Options̶1; button.
Click the ̶0;Wii Settings̶1; button.
Look at the text in the top-right corner; it will have a number with a letter after it such as ̶0;4.1 U.̶1; This is your firmware number and the letter is the name of the country you live in. If the letter is U or J, you have an NTSC Wii. If the letter is E, you have a PAL Wii.