How Do I Center My Adsense Banner?

Why can't I center my adsense banner? It won't even work with the  <c> </c> commands.

www.luvtrek.com <----- My website so you can see what I am talking about.

Thank

is the <c></c> an HTML tags?  try this <center></center>

Old style. Still works. I also tried it your way and it also doesn't work.

you can used <div> too

<div style="align:center"> adsense code </div>