I CREATED THE DATABASE MY SELF, I AM HAVING THIS PROBLEM NOW

ERROR: Unable to execute query

SELECT * from signup where username='' and pwd=''
Access denied for user 'videozoo'@'localhost' (using password: NO)

THIS IS MY DATABASE:

User: videozoo_videozo
Database: videozoo_videozoo

AND I KNOW THAT THE PASSWORD IS CORRECT I COPIED THE INFO WHILE CREATING IT TO MAKE SURE I WOULD NOT FORGET

ON INCLUDE THERE IS A FILE CONFIG.PHP: THIS IS THE SET UP I DID:

$db_host = "localhost";
$db_name = "videozoo_videozoo";
$db_user = "videozoo_videozo";
$db_pass = "*******";

IS THAT CORRECT

I EMAIL THE QUIREMENTS TO MY HOSTING PROVIDER AND THEY SAID THEY MEET THE QUIREMENTS...