DIV's.

So, from what I hear (and maybe I'm out of the loop) using DIVs with CSS is the new way to handle page layout (okay, so maybe I'm just catching on a few years late). Anyways, I've always done page layout based on tables, but it seems that divs offer a lot more flexibility...But I'm having some problems with them.
For example, is there an easy way to tell the footer to take a relative position to the bottom of the body div? Right now if the content in the body gets too large it overruns the footer div, b/c the footer div isn't smart enough to know that it belongs below the body.
Any help would be greatly appreciated.
David.

i think to have the footer at the bottom of the page you do

#footer {
    position: absolute;
    bottom: 1px;
    left: 1px;

    height: 50px;
}

and have in say the main div or content div

margin-bottom: 60px;

or wot ever the hight of your footer (plus a bit more) is