Enable Google Checkout for transactions: Enable this option if you would like to accept Google Checkout orders on your website. Once turned on, a Google Checkout button will automatically appear on the shopping cart page on your website.

Merchant Id: This is provided to you after signing up for Google Checkout. You can view your Google Merchant Id by logging in to your Google Checkout account and going to Settings->Integration.

Merchant Key: This is provided to you after signing up for Google Checkout. You can view your Google Merchant Id by logging in to your Google Checkout account and going to Settings->Integration.

Enable Sandbox for testing: Enable this option is you would like to test your Google Checkout account in the sandbox testing environment. To use sandbox testing in SEO-Cart you must first obtain and configure a sandbox account at . https://sandbox.google.com/checkout/