Your contest was likely installed for you, and may also be configured. Here is a quick run-down of everything you need to do to get the Contest loaded up into a browser error-free:

1. Read the System Overview
2. Set up Responding Domains
3. Create Channels
4. Configure Facebook Login
5. Configure Global Variables
6. Edit Email Templates
7. Set up the Webcam Recorder

Next, you'll want to make it look your own:

1. Create the images in this list
2. Using these PSD files
3. Edit the CSS
4. Change form fields