Is there any connection between Iraq and Al Qaeda or WMD's?

I am very interested in the "Jus ad Bellum" or "justice in going to war" aspect of diplomacy and international conflict.  Have we found WMD's or made a connection between Saddam's Baath party and Al Qaeda?  I have not heard of any connection being verified, but a good portion of America still believes we have found the evidence to legitimize the war.  Why? 

Interesting poll to back up the "portion of America" comment -> http://www.harrisinteractive.com/harris_poll/index.asp?PID=684