Ok, so I know I have a pci express x16 slot on my laptop (compaq presario F572US). I know this because I went to the specs on the website said video bus: PCI express x16. I heard that graphics on a laptop aren't upgradeable. I know that my graphics are currently integrated to the motherboard, so I can't upgrade that. But can't I just get a pci express x16 graphics card for my laptop? Wouldn't that work? Then the graphics card would enhance my graphics, right? Do I hae to get an adapter or anyhting....would it even work if I got a graphics card like this and inserted it into my laptop? If no, why not? If I get a graphics card, do I have to upgrade the rest of my computer, like the memory, or a better cooling fan? Please help..10 pts for best answer.