[pc]

You just need to change a bit build structure. I'm not an expert but change following css properties to:

.navboxcont_C88C7E5C {
background-color:#FCF7D7;
height:auto;
width:1000px;
float:right;
}

.navboxleft_C88C7E5C {
background-color:#FCF7D7;
float:left;
height:auto;
width:230px;


}

.navboxauto_C88C7E5C {
background-color:white;
height:auto;
margin-right:0px;
padding-left:10px;
text-align:left;
width:770px;
}

and then move your menu container to the bottom of the template but still inside of the " navboxcont_C88C7E5C" div, or something along those lines.

I just played a bit with firebug on your page and got quite good result but needs a bit of cosmetic fixes here and there.

This way your content is on top of the page and menu is on bottom and still you can keep layout unchanged.