difficulty adding widgets

Hi,

I am currently working on this blog:

http://www.youarearchitect.co.uk/churchfieldsBlog/

When I try and add the standard widgits to my sidebar nothing seems to appear, the code for my left sidebar is currently this:

<div id="left">
<img src="http://www.david-oliver.com/churchfields/images/blogLeft.jpg" width="207" height="476" />

</div>

allthough I should have several widgets in there??