Upgrading Laptop Video Card
So I own an MSI MS-16F2-ID1 laptop computer. It's an rebraded MSI computer that I had an OEM build for me. The MSI branded one is the MSI GT Series GT683DX-840US. The video card that I have in there right now is NVIDIA GeForce GTX 570M w/1.5GB GDDR5. Now, I want to explore upgrading possibilities for this video card. So my questions are these, is it even possible to upgrade a laptop video card on my own? I have pretty good computer hardware skills. If so, what interface does this card even have (I think it's PCI-Express, but I have no idea really)? What video cards fit this interface? Basically, I'm looking for any and all guidance as to what I can do to upgrade a video card for this laptop.