Online sale

Hi All,

I am working on a new project for our company i.e. online sale. for the same i am using cash sale so that once the customer places an order the delivery will get create automaticaly and invoice will be displayed. i have a dobut regarding the customer, that which customer group (account group) should i select if it is a new customer because my company wants to maintain the history of the customer payment. and moreover everything will be linked with SAP, i.e. if customer places an order the format will get upload to sap and bill will be displayed. in same way if customer is new he has to fill one form and then have to place an order.

plz help me in this.

Thanks

Ashwini K.