Microsoft Silverlight 4 脱机文档简体中文版
http://www.microsoft.com/downloads/zh-cn/confirmation.aspx?displaylang=zh-cn&FamilyID=b6127b9b-968c-46c2-8cb6-d228e017ad74
Microsoft Silverlight 4 Tools for Visual Studio 2010 简体中文版
http://www.microsoft.com/downloads/zh-cn/confirmation.aspx?FamilyID=B3DEB194-CA86-4FB6-A716-B67C2604A139
Silverlight Toolkit - Silverlight控件开发包
Silverlight 4 Toolkit - April 2010
http://silverlight.codeplex.com/releases/view/43528