I set up a Silverlight WCF web service on my site. It works when accessed from your servers, but when I am programming in visual studio, if I have a silverlight service reference pointed to your servers, it doesn't work. I have to point the service reference to my local box. I've put the required crossdomain.xml and clientaccesspolicy.xml file at the root of my web site on your servers, but that doesn't help. Any suggestions?