No licences are for one machine only
There is no need to buy Microsoft Flight Simulator X: Deluxe Edition as Microsoft Flight Simulator X: Acceleration contains everything from Microsoft Flight Simulator X: Deluxe Edition and more.
You can install Microsoft Flight Simulator X: Deluxe Edition up to two times, after that the product key won't work.
Yes you will
No licences are for one machine only
NO its not in the base packages but there are scenery addon that you can use to install it
You need two to install it, but you don't need one to play.
Thats correct
as long as you have a legal copy as many times as you like on your sole machine - you cannot legally install on more than one machine
Install the utility called File and Printer Sharing for Microsoft Computers.
Yes you will always need the base cd to add further disks later
There are already a few on there when you install it (Pacifica, Orbit, World travel, Kenmore, and an extra for 747's: Global Freightways). Or, you could download them by searching Microsoft flight simulator x add ons. I've downloaded blue, and gold southwest planes, American and delta.
as long as you have the registration code then you can install as many times as you like as long as its on your own computer. If you install on other machines i.e. for friends then you break the contracted agreements.