I assume you're talking about plain old webserver configuration isses rather than OpenACS configuration issues. I'm also going to assume that you're running Red Hat Linux since you failed to mention which distribution you are running.
Do this:
% rpm -q -l apache | grep conf
The Apache config file is usually called httpd.conf. Unlike the nsd.tcl example file, the Apache config file is heavily commented. For changing the IP address and port, you do something like:
Listen 12.34.56.78:8080
The default httpd.conf listens on port 80 (if I remember correctly) on all functional network interfaces (including the loopback address - just like nsd). Edit as necessary and restart httpd (there's usually a script in /etc/rc.d/init.d) in order for the changes to effect.
With the comments, the documentation in the server's HTML root, the online documentation elsewhere on the Internet, and dead trees references like the O'Reilly book, you should be able to figure out what you need to do.
And stop using linuxconf if you want to speed up your Linux learning curve. Good luck.
