We are trying to get an XML site map created for our 5 tabbed magento sites. The sites share a common dashboard therefore we cannot use magento's xml site map generator or any 3rd party plugin site map generator. We need each website's xml site map to be unique to that url and not cross populate which is what is currently happening. Each site has tens of thousands of pages which will need to be indexed on the sitemap. Please have a knowledge of best practices of XML Sitemaps to bid. The site's are located at (h v a c (dot) com) and you will see the tabbed urls when going to that site.