If you find the template that you are using for the news viewer, in /sitefinity/ControlTemplates/News you can then add a code behind class to that file.
Once this is done, you can then use FindControl in the page load of you new code behind to find the save button, and attach some code to that button's click event.
In the Click event handler, use find control to find the form controls and get the values you are looking for.
See the example below for a sample of how to create a code behind for a template. You won't use this same template, but you will use this method.How to notify approvers when a News item is sent for approval
Hope this helps