43995 OS Commerce Modules

I need 2 payment modules installed that have already been written and implimented into OS Commerce. They are both very simple and come with instructions! Also an add-on that allows me to change the confirmation e-mails (again this is already pre written and is a simple adition). I have 5 buttons that need adding to the index page with a bit of text. Very simple to do so am hoping that this can be done quite quickly.