WooCommerce SagePay Direct Payment Gateway
Upload to your /wp-contents/plugins/ directory.
Activate the plugin through the 'Plugins' menu in WordPress.
Goto Woocommerce -> Settings and select the Payment Gateways tab and click on SagePay Direct just below the tabs.
Add your 'Vendor Name' which would have been supplied by SagePay.
Initially set your 'Mode Type' to Simulator and then Test before setting to Live.
Select the 'Gateway Currency' to what was agread with your payment gateway provider.
Check all cards you will support (this list appears on the frontend).