oscommerce sort by rating, product color, size, feature.

1. I need to add a rating feature. Any buyers can rate products from 1 to 5 stars Anonymously. In product listing pages, buyers should be able to display products by ratings from high to low or vice versa. (just like display products by prices from high to low or vice versa). I was thinking the following contribution but this one doesn't have a feature to sort products by rating in product display page. [login to view URL] See attachment with site information and feature 4 which I am talking about. [login to view URL], [login to view URL], [login to view URL] 2. Install a new feature. Please check [login to view URL] Please visit the competitor's site and see the features I want. Thank you for your time and interest in this bid. If you have done any job similar to 1 and 5, please include it. Please don't bid if you don't know how to do so. If you have done both features before, I will escrow before project starts. Otherwise, please upload into your test server when project is finished. When everything is working, I will pay 100%. Thanks, Grant