This is what I use to center my banner at the top of my page. I am not sure if this is the correct way to do this or not.
Content visible to verified customers only.
I put the "/forums" in front of my banner location(images/misc/nasbanner.gif), and now my banner shows up on my advanced cmps and gallery. Before I added that to it, it would not work for the cmps or gallery. North America Sportsman