Installing eruby

I just learned about embedding ruby into html docs. i managed to add

AddType application/x-httpd-eruby .rhtml
Action application/x-httpd-eruby /cgi-bin/eruby

to my httpd.conf. At this point i get the “Not Found - The requested URL
/cgi-bin/eruby/index.rhtml was not found on this server.” from Apache
when I visit my rhtml file. What should I be doing from here?