The official WPF Forums (sometimes you'll find answers here that you didn't find in the Silverlight Forums).

A link to the MSDN Silverlight Forums Group.

Must have 2.5 or later.

My gosh...someone at the Register who was (mostly) fair to Microsoft's efforts with Silverlight. (his answer was 'no.atleast mostly no...').

Hum...HTA's all over again...?

A good clear video on installing Silverlight for VS2008SP1, and how to use it to write a simple HelloWorld.
Trust me...its all a lot clearer than how it was with Silverlight 1.1

File Name: Silverlight_Tools.exe
Version: 9.0.30729.146
Date Published: 10/30/2008
Language: English
Download Size: 72.7 MB

"October 2008 The Microsoft® Silverlight™ 2 Software Development Kit provides documentation, libraries and tools for developing Silverlight applications."
File Name: silverlight_sdk.exe
Version: 2.0
Date Published: 10/13/2008
Language: English
Download Size: 50.2 MB