urgent attention...

[wallacept]

I have a problem. Need to build a feature

Create groups of discounts on products.
My idea was implement a module that creates groups of
customers,
ie eg
"vip group: 2%"
"providers: 1.5%"
"grupo potencial: 1%"
This funcionality exists in prestashop 1.2 but, disccounts are for all products the discount in question.
But my problem, need disccount for each product!
I have a management program; and import data for prestashop.

my ideia, example:
"high group: 3% -> Peter Lapin, Martin Locus"
(look in the association of the client group benefiting from this discount)
"group means: 2% -> Mago Vespa, John Man "
"group down: 1% -> Mary Moin, Jashon Mental"

And, every product would have a field to join these groups, giving one example of a file in. csv, would:
"ipod2, 122 €, high" (which here means that all customers are in high group, would have a discount of 3% on this product).

Means that each product has an association to a group of discounts (but may not have, because there will be no groups any discount).

The alternative idea, was to include in the shopping cart on bottom (after the final price, without discount such) a text
appealing to say like:
"The values can be changed by its importance as a client for our company."

Suggestions please.
Sorry my english.