There are no intentions from Intel(R) to develop drivers for Windows* XP or Ubuntu. For drivers we recommend contacting your Linux* distribution support group:
Any card that complies with the standard PCI specifications should work just fine.
I remember how Intel used to be the white knight of graphic card manufacturers, the one from which you could buy hardware without looking, being sure that it would be supported by GNU/Linux directly.
I have a computer which has also Intel integrated graphics chipset may be 10 or 15 years. But its graphics support is better than my new Intel board. That is a pitty for Intel !!
Intel used to say that they will make XP driver available by August 2012. But this driver has no hardware acceleration for 2D, 3D, or video. Some graphics applications which refuse to work under this driver works fine with my old computer.
So, I advise my friends if you plan to buy a netbook or hardware beware! Intel is not a manufacturer you can trust to provide freely usable hardware.