PHP error happened

Technical information
Error type2
Error descriptionmysql_connect() [function.mysql-connect]: Access denied for user 'satowns'@'localhost' (using password: YES)
URLbusiness.satowns.co.za/_bu_listings_view.php?editid1=30
Error file/home/satowns/public_html/business/include/dbconnection.php
Error line9
SQL query