Your account will have an API login. You will need a transaction key. Go to API credentials and generate a transaction key. Then generate a signature key. Copy and paste each as you go along. After you generate them they are not displayed in your interface. You are given them once and you can generate new credentials if you lose them. So you need 3 things, API login, Transaction key, and signature key.
If this solves your problem please mark this question as solved. My breakfast just got here. Good luck to you.