I have paired a Mac wireless keyboard with my PC. It works well but being an unfamiliar Mac user I don't know how to use the @ symbol which is spaced above the 2. If I use shift it actually puts in the Euro sign (€) instead. Can anyone help me find a way to make the @ sign with Shift+2?
Your keyboard is not configured to US ANSI which is default. You are asked to confirm by pressing the left and right Shift keys on the keyboard when you boot your Mac for the first time.
This is what I get:
What you should be doing is:
If you're using a Mac Keyboard on a Windows PC:
An interesting table here shows you what you should be using to get the €. Shift2, however, is not on the list which, as @aliasgar pointed out, points to the wrong keyboard type being selected.