How to make my site on the center of the screen

[eluser]Lone[/eluser]
Oh for anyone else reading this and wanting to get into CSS a bit more I highly advise that you implement the following before doing any styling.

Reset CSS

I have been doing a similar setup for the past 2 years and it is just perfect as it gives you a clean slate to start off with instead of relying (or more correctly be suprised by) standard browser styling differences.