After wading through lots of blogs on integrating SharePoint and SilverLight...I just gave up and decided to implement it on my own. It ends up none of the blogs had ALL the steps!
http://www.u2u.info/Blogs/Patrick/Lists/Posts/Post.aspx?ID=1794
http://www.wssdemo.com/Blog/archive/2008/03/24/installing-the-sharepoint-blueprint-for-silverlight-silverlightpart.aspx
Alot of them point you to the SilverLight BluePrint, which actually doesn't help much either:
http://sl4sp.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=19961
I just wanted a no Visual Studio way of setting up SilverLight and SharePoint...I figured it out after a few hours (a long time for me to figure something out)...So, here is a step by step PDF of the process...Right click the link below and select to download the file (don't click on it).
Chris