Hello Antonio,
A customer of mine, is a distributor of different software
products.
The prog. i wrote for the company includes statistic as well.
Maybe it could be used as a basic sample for your imagination.
The prog. works basicly with 3 main-screens
Customer, Software of the customer and the person who belongs
to the product.
The calculation outgoing / incomming / statistic
selling, offering and quartal-payment
Calculation of products
Best Regards
Uwe