Upload the contents of the directory to wp-content/plugins/
Activate the plugin
Create an account on ZDN and activate it. (It's free!)
Create a service with the first market. (Type should be "One Off", "Session Based" isn't needed).
The URL to use for the "One-Off Transaction handler" is shown to you at the bottom of the Settings page for the Content Pay by Zong plugin.
It should be something like: yourblogurl/wp-content/plugins/content-pay-by-zong/content-pay-by-zong-handler.php?secretKey=MySecretKey
Where "MySecretKey" is the key you entered in the setup page
Activate your service
Add additional market(s) as required
In the "Services" page of the Zong Developer Network "Dashboard", check your service's ID and also copy your API Key (center-top, there's a link to display it)
Set these up on the plugin settings page in WP
Configure the "Content Pay by Zong Options"
Write a post and monitize it, there's a new option at the bottom of "Advanced Options" which let you monetize your post.
Requires: 2.5 or higher Compatible up to: 2.5.1 Last Updated: 2008-6-3 Downloads: 1,103