CS5 Healing brush questions?

Ok so I JUST got CS5 (photoshop) and I am totally new to the whole process of... well, everything. So I'm watching the tutorial they have up on their sight on how they have this cool new "content aware" feature that takes care of er-thang and can save the world, end the hatred in the middle east, blah blah blah. So I'm thinkin this is pretty cool, so I decide to use it. I click on it, just like in the tutorial and go up to turn on content aware and... its not there. I'm using the Windows version and the dude on the tut is using a Mac. How do I turn it on? Shouldn't the UI stuff be the same?