Could you change the paths in the component? Everywhere. Because when I change the paths from "administrator" to (e.g.) "another" (Folder "administator" and constants in the files /includes/defines.php and /another/uncludes/defines.php) joomla work ok. But don't work VirtuelMart. You could write constants "JPATH_ADMINISTRATOR" in a component and in another objects and many people will be happy )) Sorry for my "French" ))