下载地址
Silverlight3_Tools
http://www.microsoft.com/downloads/details.aspx?displaylang=zh-cn&FamilyID=9442b0f2-7465-417a-88f3-5e7b5409e9dd
Silverlight3 SDK
http://www.microsoft.com/downloads/details.aspx?displaylang=zh-cn&FamilyID=2050e580-f1d5-4040-bb09-e6185591b6b5
