i can understand your confusion! i really think you need more than just a little linux knowledge to make these changes, and to make them correctly. i tried myself, basically cutting and pasting into the httpd.conf file, and making necessary adjustments. but it didn't work!
i then reverted to asking my sysop to fix it, and he did. and it worked.
so, hopefully you've got yourself a friendly helpful systems person at your ISP.
