Wait a second ... rereading your post .... you wanted an empty table. :lookaroun
Okay ... to rebuild it, assuming you're using Zen Cart v1.3.5, paste this in your SQL window of phpMyAdmin:
CREATE TABLE customers (
customers_id int(11) NOT NULL auto_increment,
customers_gender char(1) NOT NULL default '',
customers_firstname varchar(32) NOT NULL default '',
customers_lastname varchar(32) NOT NULL default '',
customers_dob datetime NOT NULL default '0001-01-01 00:00:00',
customers_email_address varchar(96) NOT NULL default '',
customers_nick varchar(96) NOT NULL default '',
customers_default_address_id int(11) NOT NULL default '0',
customers_telephone varchar(32) NOT NULL default '',
customers_fax varchar(32) default NULL,
customers_password varchar(40) NOT NULL default '',
customers_newsletter char(1) default NULL,
customers_group_pricing int(11) NOT NULL default '0',
customers_email_format varchar(4) NOT NULL default 'TEXT',
customers_authorization int(1) NOT NULL default '0',
customers_referral varchar(32) NOT NULL default '',
PRIMARY KEY (customers_id),
KEY idx_email_address_zen (customers_email_address),
KEY idx_referral_zen (customers_referral(10)),
KEY idx_grp_pricing_zen (customers_group_pricing),
KEY idx_nick_zen (customers_nick),
KEY idx_newsletter_zen (customers_newsletter)
) TYPE=MyISAM;