iPod commericial effect

I have attached a picture of a tree. I would like the tree to be white and the background to be black, kind of like the Ipod commericials. I am not exactly sure what this is called or how to do this in Photoshop but can someone please do this real quick and attach the image with an explanation of how it was accomplished? Thanks.


I’d just up the contrast a ton, then play with colors.