Never did hear anything. My client went ahead with developing a pure silverlight application instead of embedding silverlight usercontrols into an asp.net app, so I went with pure coverflow silverlight code.
If you are looking for a resource in order to see how information can be passed back and forth between asp.net and silverlight, Check out this link. http://www.global-webnet.net/blogengine/post/2009/01/06/Running-Crystal-Reports-from-Silverlight.aspx
. It is in regards to running crystal reports from silverlight, but the basics for interacting between the two are in there. This person took the basics from another site that is listed in this link as well.
Hope this helps.