siscolor

I try to solve a problem on this module Everything works great, but the problem is that when the order exceeds the limit of free shipping over amount (which we can set in the admin, ie, free shipping over x €) then are hidden other shipping methods. So how could modify the code checkout_shipping.php to that do not disappear all shipping options even exceed the limit "from x € free"? (MODULE_ORDER_TOTAL_SHIPPING_FREE_SHIPPING_OVER <- this module) Thanks. (Sorry for my bad english)

I need to know how to implement a budget on the purchase order. In other words, the client choose the "ask for a budget" and then, the admin can make a discount; the next step, the customer has to accept it. I thought about using for example a clone of cash on delivery, but I see that after placing the order, I can not change the payment method to complete the order. Any ideas or contributions to enable something? Thanks.