Okay, I've read about how to add fields when soliciting information from customers, but what I need is the ability to add additional fields for specific products. I am selling subscriptions to a print and digital magazine. Customers can choose to order the digital magazine only, or subscribe to the print and digital magazine at the same time. When they subscribe to the digital magazine, I don't need to know the mailing address, but if they are subscribing to the print and digital together, I do need that info. Also, all orders will be emailed to our subscription house, and I need to be able to include a product id in that email, so i need both the ability to add an additional product field (in this case, ID or SKU) that would be hidden from signup page but included in email, as well as the ability to send out more than one admin email (one goes to me, one goes to my fulfillment house.) Any ideas?