Colouring cells

Morning,

I am trying to colour cells using conditional formatting in Excel 2010.

I have worked out how to colour C3 green if the value is equal to 5, using the conditional formating tab.

But, what I want to do is colour A5, B5 and C5 if the value in C5 is equal to 5, any ideas please.

Thanks for any help you can give.

Cheers