Changing terms on invoices - 8.03.407

We have several customers with incorrect Terms. Is there a way to change these customers' terms (from, say, N30 to Net 60) -- or move out the due date for their invoices -- so that reports/aging reflect an accurate past-due %?

Thanks (from a non-accountant)
Keith Walter
Vantage Coordinator
Norgren Automation Solutions, Saline Division

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