How to put div next to centered div

[safinn]

If I have a div in the center of a page with the css

#div
{
width: 100px;
margin: 0px auto;
}

How do I get a div to the left of it(div 2) like in the image: http://i45.tinypic.com/34osvw3.png
that will never move from the left of it.

Thanks alot!