Need a Different Notes Field in Customer File

The COMMENTS Field in CUSTOMER record, Forewads to the Quote / order and that is OK, BUT it also Forwards to the PO. More and More customers are giving us SPECIFIC Invoicing Instructions and it is the only place to put that so it makes it to the order / invoice. 

However, on Drop Ships we have now had 2 Vendors send our invoice with our cost to the customer causing all kinds of problems.

We need a differnet set of fields that provide customer specific instructions that forward tot he Order / Invoice but NOT the PO in a drop ship. 

CRITICAL !