I have a Windows Vista OS and a Windows 7 OS and I don't need one to play. I'm not so sure about other opperating systems below Vista.
No, Microsoft flight simulator is only for PC
You cannot download Microsoft Flight Simulator 2004, you have to buy it.
You need two to install it, but you don't need one to play.
Yes, you can play Microsoft Flight Simulator 2004 without a disc. I have put a link under this question explaining how to play Microsoft Flight Simulator 2004 without a disc. I have put a link instead of explaning how to do this because of the amount of steps.
No, the point of Microsoft Flight Simulator X is to learn how to fly planes. So you do not need to know how to fly from the start.
You cannot play Microsoft Flight Simulator 2004 anywhere online. One, it would be illegal, and two, it needs to be installed on your computer.
No, you need a DVD drive and netbooks don't have DVD drives.
Yes and no, you need a mouse and keyboard, but other then that yes.
You can play Microsoft Flight Simulator 2004 multiplayer free in the link provided below this question.
Yes, it is possible to play Microsoft Flight Simulator X without an internet connection. The only things you can't do without an internet connection is use real life weather and play multiplayer.
No, Microsoft Flight Simulator X is for PC only, so you cannot play it on a Playstation 3.
Brand does not matter, its the specification that is most important