How do I add a PayPal Credit banner to the header of my Magento 1.7.02 cart?

Here's how:

  1. Log in to your Magento admin panel.
  2. In the Main Navigation menu, hover your mouse over System then click Configuration.
  3. Click Design.
  4. Click Header.
  5. Paste the PayPal Credit banner code obtained from PayPal Financing into the Welcome Text box.
  6. Click Save Config.

See also:
Getting Started with Magento Open Source 1.9.x
Magento Forums
Magento Documentation and Resources