Should I get call of duty modern warfare 2 for pc?

[kamrinjacobs]

Okay, I'm thinking of getting call of duty: modern warfare 2 for pc, and here are my questions:

- Is online multiplayer free?
- Do I need to have a gaming computer for this?
- Which version of windows works best with this game?
- Does my computer have to be fast if I don't want any lag?
- Do a lot of people play call of duty for pc?