oscommerce fix errors upgrade and install mail manager contribution

Hi, I've a website using oscommerce 2.2 and after php upgrade on my server it stopped to work, there are lot of deprecated errors and many other errors in the log . After fixing and fully testing the site to ensure that it will work good again I want to upgrade it to osC 2.3 if possible and also install this contrib [login to view URL] Im looking for experienced developers to work in this project. If you need more information just ask me Thanks for looking and happy bidding! Best regards