Thanks for the reply, but the issue seems to be like described in the ESRI help doc, I can see the service in Arcgis.com but not in arcgis explorer online. I cannot seem to find the ACTUAL clientaccesspolicy.xml file on the server. But if I use the port number after the server name (http:server:6080/clientaccesspolicy.xml) then one displays. My question was, where does this file need to go (is it a inetpub/wwwroot?) and should it have the arcgis.com server name in it to protect from security violations.
Thanks, Karen