How to add a new tab in product form view in V6

Hello,

I am new to openerp V6 and totally new to python. So, please help me.

I want to add a new tab in product definition form just like suppliers tab to enter multiple entries of some information related to customer part number.

The name of the tab should be "Customers", the tab should facilitate user to enter multiple records.
The details of customers could be picked from res_partner.

Example:
In Openerp I have a product with name P1, there are three customers C1, C2 and C3, which calls the product P1 with the name as PA1, PB1 and PC1 respectively.

I want to handle these details on the same product form where other details of the products are been inputted.

Please help me as soon as possible.

Thanks in advance.