Postlister

I am running this project using Apache server.. i have deployed this
project in htdocs.. and made necessary changes in settings.php of
Postlister. and made changes in config file (httpd ) of http server to
point table.php as the default page to point while browser. when i acessing
in browser by http://localhost it asking for password and username. i had
enterd password from and username from Settings.php but giving an error on
page

"You need the right username and password to access this page."

please assist regard this..

Manoj.