Skrill meets the needs of more than 156,000 businesses worldwide providing a convenient and secure way to send and receive money in nearly 200 countries and 40 currencies. Together with nopCommerce, Skrill offers a fully integrated payment solution that can begin accepting payments within hours. This extension enables merchants to view payment status information and refund payments from within the Admin interface.
Please find more informartion about how to install plugins here.
The plugin is provided absolutely for free and includes source code. Find the project Github repository here