Webserver Setup, need help!

Hey guys, does anyone know how I edit, configure the server settings using the terminal? MySQL and PHP was once working.

But after frying the Xserve G5 i'm in the middle of rebuilding everything, I believe i need to re-configure the root document directory...
but have forgotten how to edit the httpd.conf file. I believe, normally it resides in /etc/httpd/... well, only now it's become lost, the directory appears to be empty.

Now i have no web document directory. Anyone wanna give step by step guide, I'm desperate! Like to have above root access too for hiding application config files.

Cheers

Web Document directory is either of two places:
/Library/WebServer/Documents
or
/Users/username/Sites

config file is /etc/httpd.conf

Several editors (command line or freeware gui) can edit the file.

Starting or stopping the web server through System Preferences > Sharing

<edit> D'OH! Sorry. umm, I don't know about Xserve. </edit>