hmm, i kinda get what you mean about the header...
but i plan to put a border around my forum, and im going to do the procedure provide by Jake Bounce here at this thread,
http://www.vbulletin.com/forum/showthread.php?t=101983
So, if im going to use that, even if i cut the header image into pieces, the border will still go around the top of the header.(i hope you get what i mean)(see attach pic)