.Net 2.0 is out, where we can download them

Microsoft .NET Framework Version 2.0 Redistributable Package (x86)

The Microsoft .NET Framework version 2.0 redistributable package installs the .NET Framework run-time and associated files required to run applications developed to target the .NET Framework v2.0.

.NET Framework 2.0 Software Development Kit (SDK) (x86)

The Microsoft .NET Framework Software Development Kit (SDK) v2.0 (x86) includes tools, documentation and samples developers need to write, build, test, and deploy .NET Framework applications.

Microsofts Subscription Members:
Visual Studio 2005


For those who don't have access to Microsoft's Subscription area they can use the "Visual Web Developer Express" environment to develop:

Visual Web Developer Express