Clients who wish to build their own catalogs on their site can choose to use the Shopping Cart feature with the billing service. After setting up the Shopping Cart, you will need to paste at least two system-generated codes on your site — one for the Cart Status (generated at the end of this page) and one for the add-to-cart Button Code (generated when you add the product on the Catalog Builder option on the navigator bar after this setup).
Select the Shopping Cart link from the navigation bar.
Edit Site Header:
Upload your own header image for the shopping cart by selecting the radio button next to Upload New Header Image. Use the Browse button to locate your image on your computer, then click the Upload button to upload the image.
To use a simple, one-color banner that contains the name of your store and matches the theme you choose for the cart, choose the radio button next to Use Store Name and fill in the name of the store exactly as you wish it to appear.
Complete the Choose Color Theme section by selecting the radio button under the theme that you wish to use. You may preview a larger version of the themes by hovering your mouse pointer over the 
icon at the lower-right of the thumbnail for the theme.
Complete the Return URL section by entering in the URL of your home page for your site. Be sure to use full URLs, including any prefixes such as http://, https://, etc...
You may choose to have the Download Manager embedded in the receipt that your consumer receives after purchase, or you may choose to have the receipt present a link to the download manager by selecting the appropriate radio button in the Choose Receipt Page Layout section (Java 1.5 or higher is required for Download Manager functionality).
Save your choices by clicking the green Save Settings button.
The four buttons at the bottom of the page allow you to do the following:
Customize Customer Emails This link will take you to the Custom Emails area of the Account Admin for customization of the Approval, Denial, Cancel, Failed, Expire Single, and Expired Recurring emails automatically sent to consumers by our system after one of the initiating events.
You must save your settings before jumping to custom emails. If you do not, all changes will be lost.
Reset All This button will clear all fields.
Preview Site This button will enable you to view what your consumers will see when they are using the shopping cart.
Save Settings This button will save all of the changes that you have made to the shopping cart during this session.
For the cart to work properly, you must generate a Status Code after saving your settings and paste this code into your catalog.
At the bottom of the Shopping Cart page, click Generate Status Code.
Copy the Status Code and paste it into the source file of your catalog.