[thelist] Center an image in the center of a page Gecko

[Rich Points]

Howdy,
I'm primarily a CSS designer and almost never use tables but I am for 
this because CSS does not support vertical alignment.  I'm trying to 
center an image in the center of a page.  I have it working in IE but  
I'm having trouble getting it to do so in Mozilla.   Here is the page 
http://philbrittin.com

Anyone know how to do this?

Thanks
Rich