That's an understatement.
mcutra: There have been proposed specifications for removable/swappable laptop GPU mini-PCIe cards, but for the most part these are not available yet. While I don't technically disagree with El quad core here in that it is possible, most laptop GPUs are soldered to the motherboard. De-soldering and re-soldering IC chips off of motherboards is NOT a simple procedure nor recommended.
CardboardSword is right. You are stuck with it. The upgrade path for you would be to a new laptop.