Well, the easiest way to just wrap the board is to stick it in a table...
Go to the styles area of your control panel, choose the proper style set, select it for editing.
In the Header box, put the following code:
<table valign="top" border="0"><tr><td valign="top">Menu on the left goes here</td><td>
Then put the following in the Footer box:
Problem solved.
You will, of course, want to put your menuy bits on the left where "menu on the left goes here" is.
I assume you know enough HTML to work with it from there, making improvements?