I live in the uk and was given a US Wii fitness board. How can I get it to work here?

My american cousins gave me it as a gift but it doesn't work. Will it work if I use a UK Wii FUTness CD with it or do I have to bin it and buy a UK Wii fitness board?I live in the uk and was given a US Wii fitness board. How can I get it to work here?you just need to buy the Disc for the wii fit