Layout Question - Basic Setup

Good Morning,

It’s been a while since I dabbled with CSS and my recent attempts don’t seem to be ending well. I’m trying to build an array of layouts in an attempt to re-learn, but I’ve run into an issue I’m a bit stumped on.

The page looks like a mess in IE6, better in IE7, and correct in FF3. Not sure how to fix IE6, but I do have a stray footer I had hoped someone a bit more seasoned might be able to chime in on. The footer floats off to the right in IE7, but lines up where I want it in FF3. Does anyone know how I might fix this? Thanks in advance!