link Cart to MySQL

[DarkBerzerk]

i have table in the database for login system

CREATE TABLE users (
 username varchar(30) primary key,
 password varchar(32),
 userid varchar(32),
 userlevel tinyint(1) unsigned not null,
 email varchar(50),
 timestamp int(11) unsigned not null
);

already have cart for things that doesnt need shipping, but its with JavaScript,
http://lasthunter.freehostia.com/rated-online/conf_files/js/simpleCart.js
but its using temp to save the cart, i wanna save the cart using the database and view it using the login system :/