oscommerce sort by rating and best seller, etc

I need some changes made to the site: 1. I have installed Master Products contribution. I hired a GAF programmer did some change so it can work with easy populate contribution. The master products' model number is a fake one. The slave products below the master product comes with real model number. Slave products might be same price or different price. I put price 0 in all master products. But this caused a problem, when buyer view products in category, they don't see the price. I need the price to show up there. Also, when buyer select Sort By Price tab on top, the price should be sortable as well. If slave products contain different prices, just show the lower price in master product. The previous programmer says he can do so but I just couldn't get hold of him. 2. This is not a difficult issue. The template I installed doesn't have column_right. I enabled it. I need some format change to make the whole site wider, and column_right need to have same font format like column_left. 3. [login to view URL] This contribution was installed without problem. But when running the cron job, it always say: Server Requirement Error: register_globals is disabled in your PHP configuration. But register_global is enabled and many other contribution is working. Once the contribution is working, make sure the best seller feature on [login to view URL] won't conflict this one and is showing the same result. 4. 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] 5. 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. Please let me know the cost for 1-4 and 5 separately. I will escrow 1-4 before project starts. I will only pay 5 once it is finished (you can upload it on your server as proof). Thanks, Grant