Dynamic Headers does just what you think it would based on the name - it allows you to create highly dynamic header space on your WordPress site.
Dynamic headers fills a void that has been present for a while in WordPress. It is a small, easy to use plugin that allows you to manage what header media is shown on each page/post. Unlike some other plugins however, this plugin allows you to use any image file OR a .swf Flash file. So you are no longer limited to a certain media type for your headers and you are no longer limited to one site-wide header. Enjoy.
Regarding Support: This plugin is offered completely free of charge with no expressed or implied warranty. This plugin is open source and is to be used 'as-is' and at your own risk. Always remember to backup your WordPress database (and ideally your file structure) before using any new plugin for the first time. Most support requests we get (and we get dozens per week) have to do with changing a theme's CSS to accomodate the new headers. We simply don't have the man power to answer all of these questions on a case by case basis, but do try to answer some, for more popular themes, when we can. We do offer WordPress consulting, so if you really need some help and would like to hire Nicasio please let us know.