Update Table Based on a Form

[HaigyBhoy]

i have a form that users update for client payments over a specified period

fields are months, monthly payments, date
monthly=36
payments=100
date=date()

i need to be able to fill out my payments table with the 36 expected
payments of 100 with the corresponding month and year

first payment october 2003
next payment nov 2003
up until oct 2006

is there a way to do this, i have tables with months and one with years on
it

thanks in advance