Fix NGINX -- nginx: [emerg] bind() to 0.0.0.0:80 failed (13: Permission denied)

I had someone re-install NGINX for me (because I needed the Perl module) on an AWS EC2 instance. Now NGINX isn't working. The error message I get is: nginx: [emerg] bind() to 0.0.0.0:80 failed (13: Permission denied) I think they way they installed it, it will no longer open port 80. My problem is that I don't know how to fix that. This project is simple -- get my instance of NGINX working again. This on a test EC2 instance (i.e., DNS is not pointing to the server). However, the EC2 instance has a WordPress installation, so it will load the homepage (when working correctly) if you hit the IP address in your brower. Again...this project is simple -- get my instance of NGINX working again. I will give you SSH access.