How To: Programmatically add a List as a webpart in a SharePoint page in WSS 3.0

This post explains exactly what you need to do if you want to add a particular list to a webpart page programatically:
 
http://stackoverflow.com/questions/1588019/programmatically-insert-a-list-as-a-webpart-in-a-webpart-page-in-wss-3-0