Listen, between this Intel PCIe card you're trying to find (I can't find any info on it either, past it's the name of a chipset, which you can't just swap out), you should forget about upgrading the graphics card for any laptop.
Yes, there have been external and/or swappable solutions. One that comes to mind is the
ASUS XG Station, which works through an Express Card slot on your notebook, which runs roughly as fast as a PCI-Express x1 slot. But it wasn't put up for sale anywhere but Australia, and it was pulled from production in 2009, so you're kinda out of luck with that option.
If you're looking to upgrade your graphics capability, buy a newer laptop with a better graphics card, or buy/build a desktop with a better card. The internal graphics card with your laptop isn't upgradeable in any sense of practicality, and even if you did find a Geek Squad location, like you're intending, that would be willing to do the work, you'd be better off just buying/building a new rig after how much they'd charge you for the service.
AMD Opteron 185 Dual Core 2.6 Ghz | 2 GB RAM | 8800 GTS 640MB | Windows 7 Ultimate 64-bit