I have done some searches, but haven't found exactly what I'm looking for. Sorry if this has been discussed.

From what I have seen IPN is just an instant payment notification setting. Do I need to set up both payment options? I don't want to confuse my customers.

What I want is this:

1. I want to use PayPal as my only payment option.
2. ...So I need to allow non-PayPal users to pay via PayPal. (Without having to create a PayPal account if they don't want to do so.)

Which PayPal option should I set up, or should I set up both?

(Links to threads that discuss this would be welcome, too. As I said, I did some searches, but didn't find what I was looking for.) Thanx!