If you want to do more, and more options, get XP Pro.

Media Center, well, i do have that in my laptop, not that great, only good about it is the program that lets you look media, tv, etc.

Still you can go Pro and get the rest of the programs from the Hardware itself wich most of them brings it.

Appart from me i have few machines and partitions wich i use various OS Systems for my work.

Well, you can search in best buy, comp usa, frys electronics, circuit city for models in the cards.

But for laptops, you have to buy the whole system as it is to have a decent graphics card, i dont know about those huge laptops 17 inch screen that have 2 hard drives which i could say that 10% chance to upgrade the graphics. Even so there is Rumors that ATI is working on a enclosure to put a PCI or AGP card outside of the box to resolve this issue about laptops. But that will not come in a few years unless im mistaken.