try using 'purchase order' - you can change the text to make it more clear to your customers
thanks for the reply, but i think you got me wrong. what i'am trying to ask. is to accept order via phone and after accepting the order, the admin will put his/her order in the system in behalf of the customer so that the customer/admin can track the order.
its not possible to place an order for an existing customer (unless you know their password) but if you do not want to create an account, you could log in yourself and make the order using the customers address details - not a great solution i know.
i think this would be a worthwhile feature for a future release