A few years old but no less relevant.
(Revised Version)
by Rich Cowan
Dissident Voice
March 8, 2003
1) Myth: Removing Saddam Hussein from power would eliminate a key backer of the Al Qaeda terrorist networks responsible for the 9/11 attacks.
Response: Just four days after the September 11th attacks, the Wall St. Journal analyzed Iraqi involvement in an article titled "U.S. Officials Discount Any Role by Iraq in Terrorist Attacks: Secularist Saddam Hussein and Suspect bin Laden Have Divergent Goals." The article linked Hussein with supporting the families of suicide bombers in Israel, but strongly doubted any linkage to Al Qaeda.
None of the hijackers came from Iraq; 15 of the hijackers came from the same country as Osama Bin Laden: Saudi Arabia.
Attempts to link Iraq to 9/11 or to bin Laden have failed. In April 2002 there was an announcement of a meeting between a 9/11 hijacker and an Iraqi that supposedly occurred in Prague. In October 2002 the New York Times quoted Czech officials who doubted that such a meeting occurred. In August, 2002, on a mission to Japan to gain support for an attack on Iraq, Deputy Secretary of State Richard Armitage refused to link Saddam Hussein and al Qaeda. Armitage noted that al Qaeda members were in Kurdish controlled areas in Iraq, outside the reach of Saddam Hussein's government.
http://www.dissidentvoice.org/Articles2/Cowan_Iraq-13Myths.htm