2 Column Table?

Hi,
I just am glancing at your new design. I thought that two column tables were not acceptable to some screen readers -- that they would read across the page.
Can you give me some insight since I bump into this all the time.
Regards,
Craig Hadley
Madison, WI

P.S. If you want to see my guidelines "interpretation" go to http://www.wcdd.org and let me know what you think.