Hi John,
If you set the Product Weight to 0, shipping information with not be required on the Cart page but they will be required to enter their address on Step 1 of checkout, which is also used to populate the customer information of thier DNN profile. If you would like, we could change the "Shipping" text on the Step 1 page to "Customer Info" . Please send an email with a link to this forum post to sales@smith-consulting.com if you would like to receive a quote to make the change.
Thanks