Interest Calculating sample

["Klein, Ron" <ron.klein@xxxxxxxxxx>]

Hi All,
I have a rather starneg request from the list members.

Does anyone have any examples of a program that calculates the interest
portion of a mortgage payment.  I have a program that calcs out the payment
it self.  But, I need to be able to calc the interest to break it out and
also to adjust the payments for a balloon payment.  I have done this in the
past, but for the life of me i can't find any of my old examples.  And after
numerous searchs on the WEB and coming back with only online calculators I
am hoping someone on this list has an application that they need to do the
same.

Thank You
Ron