Can not connect to Amazon EC2 Window Instance?

I was only provided an Amazon EC2 Window Instance: ec2-54-200-63-126.us-west-2.compute.amazonaws.com.

When I try to connect to it by using Remote Desktop Connection, it notifies me that:

Remote Desktop can't connect to the remote computer for one of these reasons:

1. Remote access to the server is not enabled
2. The remote computer is turned off
3. The remote computer is not available on the network

I had searched for an hour and I see that I have to configure something with this instance? Is there any guide, blog, website for configuring a new instance to be connected?

Have you configured a security group (basically a firewall) for the server that has the RDP port open?