http://blogs.msdn.com/mikeormond/archive/2007/05/01/what-do-i-need-to-build-my-first-net-silverlight-app.aspxMight be easiest to visit this page on the Silverlight.net site . But a simple summary is below: What you'll need to run a .NET Silverlight app Silverlight 1.1 Alpha What you'll need to build a .NET Silverlight app Silverlight 1.1 Alpha SDK Visual Studioen-GBCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/mikeormond/archive/2007/05/01/what-do-i-need-to-build-my-first-net-silverlight-app.aspx#2360053Tue, 01 May 2007 19:56:18 GMT91d46819-8472-40ad-a661-2c78acb4018c:2360053DotNetKicks.com<p>You've been kicked (a good thing) - Trackback from DotNetKicks.com</p> http://blogs.msdn.com/mikeormond/archive/2007/05/01/what-do-i-need-to-build-my-first-net-silverlight-app.aspx#2455228Mon, 07 May 2007 04:41:50 GMT91d46819-8472-40ad-a661-2c78acb4018c:2455228Charlie Calvert's Community Blog<p>The biggest news in the C# community is the official announcement of Silverlight at the MIX conference.</p> http://blogs.msdn.com/mikeormond/archive/2007/05/01/what-do-i-need-to-build-my-first-net-silverlight-app.aspx#2475298Tue, 08 May 2007 09:46:42 GMT91d46819-8472-40ad-a661-2c78acb4018c:2475298Steve Trefethen's Weblog