I want to get yesterdays entries in the database. Any ideas on what query I should run? Its been blowing my mind for the last hour!

mysql\_query("SELECT `id` , `fullname` , `address1` , `address2` , `citytown` , `postcode` , `telno` , `email` , `property_value` , `on_market` , `agent` , `asking_price` , `reason` , `total_secured_debt` , `price_concession` , FROM\_UNIXTIME( enquiry\_time ) , `form_page` FROM $table WHERE enquiry\_time=??????????");

Thanks
Ian