Hi there,
It depends on where you want to move next. Personally, I would look into .NET 3.5 instead of .NET 2.0.
If you want to know more about ASP.NET 3.5, you can check out these books:
Beginning ASP.NET 3.5
http://www.wrox.com/WileyCDA/WroxTit...47018759X.html
Professional ASP.NET 3.5
http://www.wrox.com/WileyCDA/WroxTit...470478268.html
Otherwise, the Beginning or Professional books for C# 2008 or an excellent choice.
But again, it all depends on where you want to go to next....
Imar