Re: Red Hat WS 4 - NVIDIA Quadro 500
I asusme you're referring to a Redhat tool. If so, it really isn't relevant to setting up X with the nvidia driver as Redhat's provided X configuration tool is ignorant of the existence of the nvidia X driver.
All that is required is to install the nvidia driver per the README. None of Redhat's tools are required, and certainly wouldn't provide you with any new functionality.