This page will walk you through connecting to your new server using the popular free software program WinSCP. I have a script for you to download on step 11 "Managing your web site" page.
In the Login dialog, click on the “New Session” button
Then click the "Advanced..." button
From this dialog select the SSH Authentication browse button to the right of the input box.
You will be given a file explorer box. Then select your pem file that you downloaded when you created your ec2. The prompt with look like this click ok.
Click the ok button
You have connected