This Google Checkout module for osCommerce adds Google Checkout as a payment module within osCommerce. This allows merchants using osCommerce to build their sites with Google Checkout as a payment processing option. The plugin provides Level 2 integration of Google Checkout with osCommerce. Plugin features include: 1. Posting shopping carts to Google Checkout 2. Shipping support (Currently, flat rates, item rates and table rates are supported) 3. Tax support 4. User and order updates within osCommerce 5. Order processing using osCommerce Admin UI