If you want to pay with credit card.
When you press the "Confirm Purchase" Button it takes you to Paypal.
If you are not already logged into Paypal you will see this screen
On the other hand if you are already logged into Paypal it will simply take you to the Paypal payment screen.
If you do not want to pay with Paypal you will have to go into Paypal and logout.
Then you will get the screen above.
It may try and log you in again, select "NOT YOU?"
Then you will see a screen like this
Select continue to go to the next screen and
Un-Check the box at the bottom
Now that was easy