Finding out installed modules

I have a unix account, the server runs apache. I have two questions;

1) Is there any way i can find out from a terminal what modules apache has installed?
2)Is there any file i can put in my home directory that can configure apache just for my account? I want have a custom errordocument, but this server also runs another 5 domains.

Thanks in advance for any help.

1) it depends on whether apache was using static or DSO method.
You can find out where httpd.conf is, then "cp" it to your home dir and view it.
"httpd -l" might not give you any modules other than "http_core.c" and "mod_so.c".
2) Check out -> http://www.perl.com/CPAN-local/modules/by-module/Apache/
Some may work and some may not.