I have read several places that tables can cause problems because they push your keywords in your main paragraph down. For example, if the site design had a two column table with navigation bars on the left and the main paragraph on the right, the search engines would read the table starting with the left column. This would cause your main paragraph to appear as a second, less important paragraph. What if your entire page was formed in tables? Is this going to cause a problem with submitting to search engines? Thanks.