Password protect the site (without htaccess or membership)

http://wordpress.org/extend/plugins/members/

Looks like a good option, I trust his plugins. There are a variety of other plugins available if you search for members, private, access, or a combination of those terms

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)