You might start by reading this -
It is possible to get this chip set working, I have no idea if any slackers have it going. It will run under Ubuntu, I know that is not your distro of choice.
Here is a link that can help.
There is a lot more on ubuntuforums.org
Here is a link on how to compile the driver for Debain, and its derivatives.
I have also seen posts saying Mandriva will run out of the box on the GMA500 chip set. I have a HP Mini 210, and it came with a standard Intel chip set. Best of luck with it.