UV Not Flipped but Backwards

Greetings, all!

I’m taking my first steps into texturing and have hit a bit of a snag. I’m trying to make a street sign and have gotten as far as applying the sign image to the faces I select. But my problem is the image reads backwards on the mesh. Here’s a screen shot:


I can scale/rotate/move the points around in the UV/Image editor, but I don’t see how I can completely reverse them so the sign goes the right way.

I would also like to know how to set the black color on the sign to be transparent (alpha) if you’re feeling generous. :smiley:

Thanks in advance!