// HTML
      <div id="RightColumn">
           <div id="Search">
               ....
           </div>
      </div>

// CSS

#RightColumn
{
    float: right;
    width: 216px;
    background-image: "bilder/rightcolumn_border.gif";
    padding: 10px;
}
#Search
{
    background-color: #ffffff;
}