How do i select an object that is separated from other objects I was watching a tutorial on texturing. There was shown a way to separate the glass part of the windows so you won't keep on clicking on them while you're texturing which I admit made things a lot easier.

Now I want to work on texturing my windows but I have no idea on how to select them. They aren't on a different layer. If there is a clip board option on here I haven't found it yet.
Because you mention the object is separate from other objects, I am thinking that selection may have been disabled on the object you can't select.

In order to enable/ disable selection on an object you can click on the arrow next to the objects name in the outliner.