http://www.wssdemo.com/default.aspx
2,Workflow Developer Starter Kit for WSS v3
http://weblogs.asp.net/jan/archive/2006/06/29/Workflow-Developer-Starter-Kit-for-WSS-v3-_2B00_-More.aspx
3,Create custom field type in WSS V3
http://www.sharepointblogs.com/jimyang/archive/2006/07/09/9025.aspx
4,http://book.csdn.net/bookfiles/160/