From Joomla! Documentation
in the section (Developing a Model-View-Controller (MVC) Component for Joomla!1.6) - Part 09 exactly here 
the name of component is "hellowrld", and the name of view is "helloworlds".
Ok, i replaced them to my own names, "helloworld" to "first" and "hellowords" to "test"
when i add or edit an Greeting it administrattion panel and after save it, i will be redirect to page like this (index.php?option=com_first&view=firsts) !