MCITP Self-Paced Training Kit Exam 70-442 .Designing and Optimizing Data Access by Using Microsoft SQL Server 2005

ADO.NET: More than a Matter of ABCs

http://www.samspublishing.com/articles/article.asp?p=102202&seqNum=2&rl=1

Comparison of ADO.NET and ADO

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcon/html/vbconA-DOPreviousVersionsOfADO.asp