CRE Loaded Supplier Query

I want to add funtionality to CRE Loaded 6.2. This will allow me to set up products from particular suppliers and allow the suppliers to login and see what sales have been made against their products. I also want to send them an e-mail when a sale is made. In addition I need to be able to enter payments made to them so they can query all amounts due and amounts that have been paid.