We are running a temporary sales promotion where all orders received during the next two months will receive a $5 discount per item ordered.  We don't want to change the selling price of the item on the invoice.  We'd rather show the regular price and show a separate "Promotional Discount" item with a unit value of $5 per item.  We'd enter the quantity equal to the number of eligible items on the invoice.
 
Is there any way to do this?
 
Paul Groh