change address from http://mysite.com to http://www.mysite.com

Fresh install from my ISP HostGator. The store loads up to http://mysite.com not http://www.mysite.com. I edited both the includes/configure.php and admin/includes/configure.php and added the WWW. Site now comes up with http://www.mysite.com but know users can not login and there is no myaccount link in the header. I had to put both configure.php files back to default to get it working again. So what am I missing here? How to get the "WWW" back ?

Elise

Where exactly did you make the change in your configure.php file?

To my knowledge it must be changed in 2 files.

/includes/configure.php (around lines 17-18)
define('HTTP_SERVER', 'http://www.yoursite.com');
define('HTTPS_SERVER', 'https://www.yoursite.com');

/admin/includes/configure.php (around lines 29-32)
define('HTTP_SERVER', 'http://www.yoursite.com');
define('HTTPS_SERVER', 'https://www.yoursite.com');
define('HTTP_CATALOG_SERVER', 'http://www.yoursite.com');
define('HTTPS_CATALOG_SERVER', 'https://www.yoursite.com');

Yes those were the lines I changed. But when I do, users can no longer log in.

Never mind, I had a typo in the configure.php file. I have to learn to have coffee first in the morning before working on my site. :)