Credit Card Payments

This is the way I see my problem:

Australian credit card monthly statements require the borrower to repay a minimum AMOUNT against the statement (not a PERCENTAGE of the principal, as do overseas' credit cards), if he/she so wishes.

Furthermore, there is no time limit in which to repay the principal; therefore, this arrangement is an open-ended contract, which is designed to entice the borrower into doing nothing more that make interest repayments, until they die!

I am trying to construct a spreadsheet (to suit Australian conditions) that has columns for:

a. Payment Amount.
b. Cumulative Payments.
c. Interest.
d. Cumulative Interest.
e. Principal.
f. Cumulative Principal.
g. Principal Balance.

I have studied the book, John Walkenbach's "Microsoft Excel 2000 formulas" (and accompanying CD) like the Dead Sea Scrolls, but I cannot construct a spreadsheet to suit Australian conditions (to my knowledge).

I know that this is a big ask, but can anyone direct me to a site where I can get such a spreadsheet, or offer any suggestions, please?

Regards,
Mick.

It's OK, folks!
I have answered my own question, by finding it at

http://www.fido.asic.gov.au/fido/fid...ne/Calculators

Regards,
Mick2