I've got a silverlight web application and after that I'm attempting to access b .jsp page that is dwelling within an apache server. Appears like I want clientaccesspolicy.xml and crossdomainpolicy.xml within the root directory of apache. But I don't know on which the main directory in apache server may be like. Can anybody throw some light about this?

the main dir is generally your htdocs directory. You are able to look up inside your httpd.conf, it's the DocumentRoot.