Centering a web page

[nickd_101]

Hi,
I'm working on a website and i'm wondering how/what the best way is to center the page contents so that it appears to have borders down either side. I'm thinking along the lines of newer websites like facebook or even logitech's just as an example.
Also, Is there any upside/downside to even centering the page in this way?

Thanks for your help,
Nick

[iblastoff]

use css (margin:0 auto).