Below you will find links on how to setup, configure and manage Google Checkout in CS-Cart:
Signup
http://checkout.google.com
Obtaining your Merchant ID and Key
http://support.google.com/checkout/sell/bin/answer.py?hl=en-GB&answer=42963
Setting up Google Checkout in CS-Cart
http://kb.cs-cart.com/google-checkout
Troubleshooting Google Checkout
http://kb.cs-cart.com/google-checkout-orders
Shipping Limitations with Google Checkout
http://kb.cs-cart.com/google-checkout-peculiarities
How to manage Google Checkout orders in CS-Cart
http://www.granitewebdesign.com/whmcs/knowledgebase/99999223/How-to-manage-Google-Checkout-orders-in-CS-Cart.html