is an available COOLSite payment processor for your website.

Review the product here

 Setup Authorize.Net as a Payment Processor in COOLSite Admin
Login to your COOLSite Admin Area and select Configuration > Payment Processor > Real Time.
Enter: Login = API Login / Password = Transaction Key

Once you have done this, you should be able to do a test order to see if it is working.

You can check your Error Codes at the following: