Someone else may have a more elegant solution, but since you're using tables, you could insert another table above the footer, with no borders, and just insert as many empty rows as you need to move the footer down to where you want it.

You might want to try posting your problem in the Webdesign and HTML board. Someone there might be able to take a look at your code and help you. It looks like the problem is with the structure of the tables, but I'm afraid I haven't been able to sort it out. This is the sort of thing that used to drive me crazy when I was using tables -- now I go just as crazy using divs!