down the bottom of the UV unwrap window there's a button with a triangle on it. It's next to the lock selection button. This is the filter selected faces button. If you select some faces in the viewport, and then hit this button, it will hide the other faces.
The button has been there since at least max8. its near the list box indicated in the image attached a few posts up also, max is by far the better tool-you just need to find the buttons
Rainyn: I knew that was an option but what im trying to do hear is find a reason to use 3ds max over blender (for unwrapping purposes) So far,Blender is a hell of alot better/easier when it comes to unwrapping. And sprunghunt,I dont see that button anywhere.maybe it has to do with us having different versions of 3ds?