Marketpress - Where to Get PayPal Credentials

There did not seem to be much doco on where to get PayPal Express credentials for a multi-site installation of Marketpress.

In the forums and from the Marketpress doco project page the following guides were provided. They were highly technical and did not really specify where to get credentials.

<i>https://cms.paypal.com/us/cgi-bin/?cmd=_render-content&content_ID=developer/e_howto_api_NVPAPIBasics#id084DN0AK0HS

https://cms.paypal.com/us/cgi-bin/?cmd=_render-content&content_ID=developer/e_howto_api_ECGettingStarted</i&gt;

So I had to google it and found the following link which seems rewarding.

https://www.paypalobjects.com/IntegrationCenter/ic_certificate.html

Please correct me if I'm wrong but this is the right place to obtain credentials?

Cheers

Johnny