Setting width of vBulletin

[jdk]

How do I set the width of my vbulletin to a particular width?

I am looking to start out with a simple layout like http://www.areax.com

I want a place at the top I can put a logo and on the right put code for an add rotation.

 

[Lord]

are you doing it by css or the built in theme manager?

not sure about the built in theme manager, but i think in css you can set width to whatever pixel you are looking for