The shopping basket has already been added to your website. To turn the basket on and off you can go to the website control panel and press 'Sell Online'.
At the time it was added you would have received two emails with instructions on how to set up your payment provider etc. This is something that you will have to complete as it is done over a secure server that we have no access to.
If you are in need of copies of the emails you can request them by clicking the sell online button in the shopping basket, then clicking on 'send duplicate setup emails' These will provide you all the information you need to get your payments services set up.
For more information on listing your sales or services then we have a comprehensive range of videos to show you which can be found at
Make a website | make your own website | website building : videos
We hope this is helpful
Reason8 Support