This module will give your store a new payment method - Purchase Order.  It has a field where the purchase order number is to be entered.

This zen cart mod comes two different ways.... which you need to select when ordering. 

1.  Purchase Order Payment Method is only to be seen by customers that you, as the admin, add to a select group.  No other visitors / customers will see it.

2.  ALL customers can see and select the Purchase order payment method.

There is no difference in installation cost, but we need you to let us know which of the above options you want.

Zen Cart Versions:  1.5.0, 1.5.1