Number keys on a MacBook

I have a MacBook Pro 15" running OS 10.7 Lion. I can’t seem to get the function keys to work as number keys. I need to be able to switch view to top, left, bottom and/or rotate with the 2,4,8 keys, etc.

I’m holding down the “fn” key at the bottom left of the keyboard and pressing the function keys, but that doesn’t work. Can anyone help me?

Thanks.

File / User Preferences / Input, select the ‘Emulate Numpad’ checkbox
Look in the macbook User Preferences / Keyboard for function keys setup