Once your instance is running in the cloud, you may want to manage it. On Unix/Linux, just ssh to it. On Windows, you may want to use WinSCP/Putty to do that. Here is a good link to detail the process. Make sure to log on as ec2-user not root.http://www.keywordintellect.com/amazon-web-services/managing-an-amazon-ec2-instance-using-putty-ssh/After login, type the command:
# sudo su