need a sidebar

I need advice on how to create a side bar on my website quickcashmall.com
Help is appreciated

 

I think you already have mark up in place

<div id="content">
        <div id="contentleft">
        </div>
        <div id="contentcenter">

Code (markup):

you just have to tweak your css

#contentleft { position:relative; float: left; width: suitable width}
#contentcenter{position:relative; float: left; margin:reduce the left margin to 10px may be}

Code (markup):

clear the float after the div "contentcenter"

<div id="content">
        <div id="contentleft">
        </div>
        <div id="contentcenter"> whatever content you have remain same
        </div>
        <div style="clear:both"></div> <!-- clear the float -->
</div>

Code (markup):

 

Thank you radiant_luv