Install modules/addons for OsCommerce website

I need to have several oscommerce modules/addons to be implemented. What you have to do is to install thoses addons on top of the very slightly modified osCommerce template #9171. Most importantly is that you need to test everything very thoroughly and make sure that everything works perfectly fine all together. Addons are working, I will provide you links to download them. All addons are from addons.osCommerce.com. All addons come with instructions how to install them and most have support forums links. It's not a hard work but we don't have time. around 15 addons total