Gant: I am also starting to believe that the dark arts were involved in this dilemma. I have tried resizing every table, tried setting the static images as background images, tried erasing height/widths... All to no avail.
1 simple thing I kinda noticed, is that you set the full width to 700 and then set columns around 356 instead of 355. You also give 1px cellspacing in some places. This doesn't add up too well.... perhaps you should recheck all the math or so.