How to list posts by a certain user-group in time-based order?
 

I run a website that is often visited by developers of a video game franchise, and was wondering if there is a way to create a PHP-based page that will list all post by the users within the usegroup pertaining to the development team.

I've looked for modifications or certain options which would fit my needs, but they either don't exist or fall short.

Does anyone have any ideas where I could start?

Here is an example: http://forums.station.sony.com/ps2/i...cent-activity/