Aaahhh...Okay.
MrProtoman is correct - the first step would be to make a selection of the area you want to put on it's own layer. There are several ways to do this: the Marquee Tools, the Lasso Tools, Select > Color Range, the Magic Wand, and the Pen Tool. Once you've made the selection, there are several ways to get it to it's own layer: Edit > Copy - Edit > Paste (will make it's own new layer), right-click (with a selection tool active) and choose Layer Via Cut, or the keyboard shortcut Ctrl + J (Cmd + J on Mac).
You'll find that Photoshop offers several ways to do just about everything.
For a decent tutorial on the basics of the Pen Tool (which is a lot easier than you think, once you get the hang of it) check this out:
http://www.phazongraphics.com/forum/...pic.php?t=2380
Like I said, before, finding and following some tutorials - even on subjects you don't think you'll be interested in - can help you out, in the long run.