trying to make a really basic shooting game

I want to make a simple game where you click to shoot at a pyramid of cubes, but i need help with a few things. First, I can not find mouse look no matter how hard i look for it I tried a script someone gave me but it didn't work, so i need to find out how to do that. Second, i need to know how to shoot by clicking.

cam by mouselook: lookAt

shoot by clicking: ScreenToWorldPoint and RaycastHit

Lots of examples @ http://unity3d.com/support/documentation/ScriptReference/Physics.Raycast.html

the mouse look script comes with unity when you make a new project it will ask you if you want to add certain scripts and assets and it will be in there if you add it. just make a new projects and add in all the assets and in the game look for the script named MouseLook.