PemBer Paypal Options require you to provide the Paypal NVP API access details, that is the API Username API Password API Signature These details can be obtained from your Paypal Business or Premier Account. Here are the detailed steps. Login to your Paypal Business or Premier Account Click on Profile in the top Menu. Click on "My Selling Tools" Click on Update to the Right of "API Access" If you are doing this for the first time, you will have the option "Request API Credentials". If you have already done this it will be "View API Credentials" Now you can either genrate (for first timers) or view your API Username, API Password or API Signature These details have to be entered in the Paypal Options screen of PemBer in your Admin area. If you have any questions, or face any problems, please reply to this thread.