Hi,
you can deploy silverlight application by following below link
http://www.dotnetobject.com/expage.php?exurl=http://learn.iis.net/page.aspx/262/configuring-iis-for-silverlight-applications/
in silverlight5, users are usually facing permission issues, you can see the permission solution in following link
http://www.dotnetobject.com/expage.php?exurl=http://www.c-sharpcorner.com/uploadfile/GemingLeader/whats-new-in-silverlight-5-elevated-trust-changes/