Microsoft has released the .NET Framework SDK Beta 1
This first beta of the Microsoft .NET Framework includes everything you need to write, build, and test .NET applications: ASP.NET, the Common Language Runtime, documentation, samples, tools, and command line compilers.Download
This beta software should only be installed on non-production test machines. The SDK will run on Windows 2000 and Windows NT 4.0 (including the NTOP for ASP.NET support), Windows 98, or Windows ME. Internet Explorer 5.5 and Data Access Components 2.6 are required.
Attention SQL 2000 users: Installing the SDK samples can, in some circumstances, overwrite the Pubs and Northwind sample databases that are installed with SQL Server. For more information about this problem (including a workaround), please read the Late-Breaking Known Issues before installing the SDK samples.