How do I install a bike seat clamp properly? I recently moved, and had to take off the seat to my bike while I moved. I was surprised to find when I arrived and settled that I couldn't find the clamp to my bike seat. I managed to find a new bike seat clamp, but it's not obvious how I'm supposed to install it. What should I do? I've included a photo of my bike seat, without the clamp. Don't be confused by the bike behind it, the black seat post and seat and red body is the one I'm working on.

My bike is a GT avalanche, unmodified from the store.
Position the clamp so that the open section of the clamp is oriented to the slot in the frame. If the frame slot faces the rear the opening in the clamp should also face the rear.