After using MAMP for ages, I found out I could actually use Snow Leopard's built-in Apache server. Now that I've upgraded to Lion, I have no idea how to do this anymore. Do you know how to turn my Mac (OS X Lion) into a web server, so that I can easily run the lastest version of PHP and MySQL in it? Also, how do I set the "localhost" aliases? I remember it was a httpd.conf file — something that I don't seem to find anymore on Lion.

Pardon me for my rusty english. Let me know if my question isn't clear enough or duplicate. I'll improve it right away.

After using MAMP for ages, I found out I could actually use Snow Leopard's built-in Apache server. Now that I've upgraded to Lion, I have no idea how to do this anymore. 

Do you know how to turn my Mac OS X Lion into a web server, so that I can easily run the latest version of PHP and MySQL in it? Also, how do I set the "localhost" aliases? I remember it was a httpd.conf file — something that I don't seem to find anymore on Lion.