To install nodes for servers, install the LEM agent and connect it to your LEM appliance. You can configure and manage the nodes from Manage > Nodes (including configuring different product integration connectors). Once they connect, they should appear in Manage > Nodes automatically, and Windows systems by default will be monitoring the 3 default core Event Logs (Application, System, Security).
The instructions you're referring to are for version 5.5, which is why they don't match. The newer version has a simplified flow that tries to walk you through the steps.