There are some Oscommerce addons installed in my site but the same are not working, I need to have this features working fine.

There are some Oscommerce addons installed in my site but the same are not working, I need to have this features working fine. The Features are: 1. Wishlist -> [login to view URL] 2. Simple Checkout -> [login to view URL] 3. Seo Urls 5 -> [login to view URL] 4. Star Rating in Product info -> [login to view URL] 5. Order Handler R3 -> [login to view URL] Also I need a new modification: - Modify Oscommerce download feature to work with embedded videos played from external source like Youtube or a video hosted locally in my domain. Specs for front end: 1. When the customer select the download option only specific payment options should be available. 2. When new download order is completed a link to a new window should be displayed so if customer click that link a new window with the embedded video should be opened. 3. This new link should be displayed in checkout successful page and account history info page just like download products does. Specs for admin site: 1. In the download configuration should be an option to select the payment methods available for download products.