The Microsoft .NET Framework product group have been busy making it easier to find out about and install the latest version of the .NET Framework...

a simple URL and a clean UI at

http://www.microsoft.com/net/

It's certainly easy to remember.

And while I'm at it, worth a mention is the Microsoft Web Platform installer page from where you can install the Microsoft Web Platform components:

http://www.microsoft.com/web/

Note that the web platform installer is currently in beta.

HTH

Doug