We have an active OSCommerce store running and would like to add customized functionality to do the following things.
1. Charge no shipping on whatever item we designate. If it's bundled with other products then that item alone will not be involved in the shipping calculation.
2. Charge different prices based on groups. Ex. Retail, Wholesale, Student Discount.
I have browsed the OSCommerce Contributions and found a contributions that perform those functions but they are involved installs which I think best suited for someone experienced.