how can i find out which modules are loaded in apache

[Ken Hawkins]

I have installed apache13 and it is running however when i run;
'httpd -l' I see this:

Compiled-in modules:
   http_core.c
   mod_so.c
suexec: disabled; invalid wrapper /usr/local/sbin/suexec

I am running as root on the box and am trying to make sure that 
mod_alias is part of apache. it looks like it is not however since 
their is a BIG hole in between _core.s and _so.c

what is the easiest path to installing apache13 with ssl and mod_alias?

I also have php4-pear, mysql, phpbb and phpmyadmin installed on the box 
so, will just make reinstal apache13 destroy all my settings here? I 
have to ask to make sure that I catch all the configuration files such 
as httpd.conf, php.ini, etc.

how can i find out all the flags that are available to set for 
make/make install for the apache13 port? (rookie question)

thanks,
ken;