1. The game wont even run without a graphics card.
2. Laptops are basically non-upgradable in terms of graphics cards (hard drive and RAM usually are)
3. A GOOD graphics card is usually anywhere from $200-$600 (a decent card is usually $200, super-high end can be over $600 - this is for DESKTOPS)
4. To find your system specs go to:
menu -> computer -> system properties
that will tell you about everything (everything important, that is. CPU and RAM) except the GPU (graphics card). To see your graphics card you can either click "Device manager" and go to "display adapter" or just right-click your desktop and go to the ATI or Nvidia control panel (depends on what card you have). If you dont even have a card it wont give you an option.