I’ve updated a free PayPal module for use with 4.6.4. Should also continue to function with 4.5.x versions.
Available at OXIDprojects: https://github.com/OXIDprojects/6vC-PayPal-Basic
If you have questions, please see this thread:
http://forum.oxid-esales.com/showthread.php?t=16200
FYI:
I’ve released this openly based on the fact that other major e-commerce platforms already have a free PayPal module available with similar capabilities. I hope this will help drive the popularity of what I believe is an excellent e-commerce solution: OXID eShop.