Not an user replaceable card. If this is an issue for you, be sure to expect to pay for such a feature and then you may learn the only source of "cards" will be the laptop maker.
Laptops are not like desktops...
As to TV Tuner, there are PC-Cards and USB devices to add that feature.
What is the difference between PCI Express and AGP slots? Am I correct that these terms refer to the motherboard and the presence of slots for the addition of cards ie graphic cards? Which is better? How can I tell if a laptop has either? Which one will let me add on a tv tuner card and graphics cards?
Sorry to throw so many question out at once, any help is greatly appreciated!