The paypal landing page does not have any settings that can be changed.
by default is will allow the customer to checkout using a credit card, there is a link to login to the paypal account if the user would like to checkout using paypal.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.