Data Flow Diagram

[chicago_57]

I was given a simple DFD problem at school for an order system. The object was to draw a context DFD & a diagram 0 DFD. The simple scenario is this DFD is for an order system, but the prof. made it a web based order system, with this simple sceario:" Precision Tools sells a line of high-quality woodworking tools. When a customer places an order on the company's web site,the system checks to see if the items are in stock,issues a status message to the customer, and generates a shipping order to the warehouse, which fills the order. When the order is shipped, the customer is billed. The system also produces various reports."This is just the context diagram I have attached, I know I have to break the processes down in Diagram 0, but I am wondering if I am missing something with it being a web based system, such as is the computer site considered a process or an entity that I must show? Additionally, The various reports bothers me also, I don't think I would have to show them until Diagram 0. Anyone give me a helping hand. I drew the diagram on smart draw (I'm using their free trial, thats why the watermark) Thanks