NET Framework Developer Center: SDKs, Redistributables & Service Packs

Here's a great article you might be interested in:

.NET Framework Developer Center: Stay up-to-date with these downloadable service packs, updates, samples, and related components for the .NET Framework.

URL: http://msdn.microsoft.com/netframework/downloads/updates/default.aspx#.NET%20Framework%202.0%20Beta%20SDK%20and%20Redistributable?_r=1 

Globalink Tech Support