What can I do at this situation?

Question

I create feetbl having following fields:

f_id bigint

f_receipt char

f_totalfee bigint

f_paidfee bigint

f_remainingfee bigint

f_paid_date datetime

f_due_date datetime

when I insert records in feetbl by following values

1 rec1 40000  20000  20000  20/07/2012   30/09/2012

Here I added one record but when candidate approach to me for giving all remaining fees with new receipt number then How can I update this remaining fees by new receipt number??

 Give me solution of this by considering multiple records.

Thanks in advance.