Regarding the all "Group Pricing Per Item" issue:
I did all (I think...) I asked in the instruction of:
http://www.zen-cart.com/index.php?ma...roducts_id=256

When I making some test order proccess:
The Shopping Cart contain the right Sub-Total OK and the right total group price. BUT, when I continu to the checkout pages:
in Step 2 of 3 - Payment Information and also
in Step 3 of 3 - Order Confirmation and also
in the Order Confirmation email

The Total shown is the regular price and not the group price. why?