customer prepay

[Adam Rose]

I know there has to be a simple solution to this problem.  We actually had
a customer come in and prepay on there bill.  How do I pay on an invoice
that does not exist?  The invoice will generate on the 12th of this
month, but I would that to have a pending payment on the future invoice so
that it does not send a bill to the customer and it does not show up as an
open invoice.

Freeside 1.3.1
linux 2.2.18
perl 5.00503

Thanks,
-- Adam