Create a Custom DNN Module

http://www.codeproject.com/KB/custom-controls/Creating_A_DNNModule.aspx

http://www.codeproject.com/KB/custom-controls/SuperfastSuperEasyDotNetN.aspx

http://www.codeproject.com/KB/applications/LCTDNNModDev.aspx

http://adefwebserver.com/dotnetnukehelp/LinqTutorial/

http://www.15seconds.com/issue/050505.htm

http://www.dnncreative.com/Forum/tabid/88/forumid/5/postid/231/view/topic/Default.aspx