On an already installed fresh copy of the oscommerce Milestone2 version
Install the following contributions:
Product Listing in Columns
[login to view URL],112
Easy populate
[login to view URL],500
Member approval
[login to view URL],1339
Prices for logged in users only [login to view URL],601
Group Discount [login to view URL],1671
Create a custom modification. See complete details on the attachement.