Any good webcast for Data cleansing

I have sql server 2005 developer edition and vs2005 team system.
I want's to use data cleansing feature.i.e.
Integration Services Advanced Transforms Includes data mining, text mining, and data cleansing

Can please some body points me to any good webcast about using this feature

I just know about this document:

http://forums.microsoft.com/MSDN/Search/Search.aspx?words=data+reader&searchKey=&lcid=1033&searchscope=forumscope&siteid=1&ForumID=80&ForumGroupID=-1