here is a small example i make in quick for you.

Code: 
<style type="text/css">
#content{
	width: 400px;
}
#right {
	float: right;
}
#left {
	float:left;
}
</style>

<div id="content">


<div id="right">
Your right content here
</div>


<div id="left">
Left content here
</div>

</div>
basically Div content contains 2 divs (right and left).
you can set there margin etc in style.