/etc/httpd/conf/ is the folder that holds the httpd2/httpd.conf files with my Mandrake 9.2
within the /etc/httpd/conf/ folder there will be an additional folder labeled vhosts/; so the full directory would be
/etc/httpd/conf/vhosts/ and edit the vhosts.conf file.
I am still working on getting the name-based virtual hosting to work.
Good Luck!