Here are some links to support the theories:

http://www.loosechange911.com/
http://www.saunalahti.fi/wtc2001/military.htm
http://www.thememoryhole.org/911
http://www.stopthelie.com/911links.htm
Online source for information on Stanley G. Hilton's Federal Suit against the Bush Administration for their complicity in the terrorist attacks of
http://911skeptics.blogspot.com/
http://www.deprogram.info/
September 11th 2001 and their subsequent attack on civil liberties and sovereign nations. http://suetheterrorists.net/
http://www.policestate21.com/
Evidence of High-Level Government Complicity in the Events Of 9-11--Emperors Clothes
9-11 Research An Attempt to Uncover the Truth About September 11th, 2001
Alex Jones' Prison Planet.com
Propaganda Matrix.com
Conspiracy Planet - 9-11
Physics911.org - Applying Science to Uncover the Truth
911-strike.com
Serendipity: The World Trade Center Demolition and the So-Called War on Terrorism
Inquiry911.htm
AttackOnAmerica.net - Hundreds of 911 Articles with Videos, Audios, Photos, Polls and Petitions
What Really Happened
9-11 Visibility Project
The Power Hour