No worries, I think he was just taking exception to the all caps posts, as well as maybe the thread title which doesn't give a lot of info. You'll probably get more help faster with thread titles pertinent to the question.

But anyway, about the transparency thing, depends what you need to do with it. If you check the alpha channel in the render, you will notice that the black environment won't be included, so by default that will be used as transparent if you save out the image as a png for example. Or you can take the alpha channel into AE and use it there. Sorry can't give you tons of details on that process right now.