Another Apache Question

Since I don't know where else to ask this...

How can I configure Apache to go to a default page?

Right now, if I go to http://localhost/, I get a 403 error. It's not detecting the index.html page. How can I set it up to?

Thanks in advance.

Ah, nevermind, I figured it out. Two more questions, though:

[list=1][*]Now, when there isn't an index file, it shows a directory listing. How do I shut this off?[*]How can I set it up to work for .php extensions?[/list=1]

Okay, I figured out #2...still need help with #1.

Add a .htaccess file to the directory. I don't know how exactly it looks, but I'm sure a google search on htaccess will turn up enough info.

IndexIgnore *

<Files .htaccess>
order deny,allow
deny from all
</Files>

that will not show anything if you don't have a index page.