Actually they’re Visual Basic 2005 -ebooks, but free is good
Introducing Visual Basic 2005 for Developers:
http://msdn.microsoft.com/vbrun/staythepath/additionalresources/IntroTo2005/default.aspx
Upgrading Microsoft Visual Basic 6.0 to Microsoft Visual Basic .NET: http://msdn.microsoft.com/vbrun/staythepath/additionalresources/UpgradingVB6/default.aspx
Hopefully we’ll see some C# books getting released fairly soon, I’m a big fan of C#.