GD Star Rating is very powerful plugin. But that power is not always easy to use or implement. Some of the more complex aspects require a certain knowledge of web design and PHP. If you need some more specific customizations or integrations here is more info on the subject.
I am confident that most web developers specialized in PHP and WordPress will be able to customize your theme and plugin to exact specifications you need. But, we are also offering premium support models that will cover all your needs related to this plugin. One is premium support, and the other one is our direct involvement in custom work for your projects. To get more info on both methods check these pages:
a WordPress rating system