I too am currently working on a shopping cart using...
php
mysql
allowing:
an administration page that will give access to the admin to change product info, customer info, tracking info.
customers will have their own accounts, the ability to order their products with prices that include tax, if applicable, and shipping costs through UPS, including next day shipping costs and ground costs. The customer can also track their merchandise through the cart and the ups site. The cart will also keep track of what merchandise the customers purchase and save this information to display it to the customer for faster and easier shopping...
and the cool thing is, this cart will be free... sort of a way for me to show off my skills, I am looking for anyone who would like to help...
either contack me through email(amandanetworx@onebox.com), AIM: cloningeinstein, or Voice mail: 972-993-2022 x6031
if you help with it, we will share the credit for the software. if you don't want to help, then any ideas and information will be credited in our thanx page. Thanx in advance everyone.