PHP, Apache and MySQL

I was trying to configure my web server last night and I found this little problem, when I open up the site using the domain name, I found out that it was asking for a username and a password. I researched in google and found that apache web server asks for this one. It is not my first time to set up a web server but it was my first time to encounter this kind of problem. Is there a way to remove this authentication process? or is it with the php version im using? I was using apache 2.2.x but downgraded to 2.0.x to see if the problem still persists, and trust me, it was still there. I tried removing the authentication line on my configuration file, but to no avail. Will try to post back later tonight if I got that running.