I have created a delivery table that contains all of the usual fields ,
Pickup, Delivery, Billing, NoPeices, Weight... etc.  The table is updated
with current delivery information daily.  At the end of the week I create a
report grouped on Billing customer that prints an invoice with all of the
unprinted deliveries the customer is paying for... the report works fine.  
What I need to figure out is how to assign a unique invoice number
(autonumber) to the report that will be associated with each Billing customer
for that print period.  Can I somehow generate a unique number at the time I
create the invoices.

I hope this is not too confusing and thanks for any help you may offer.

Randy