Downloading

Hi, I want to download some more planes onto FSX, how do I know if the plane works in FSX?
How do I know if it is an actual plane?

Your reply is welcome.

Well, for starters, usually the description of the plane will tell you whether or not the plane is FSX compatible. Some FS2004 software will also work; usually it will say that if that's the case. I'm not sure what you meant by "if it's an actual plane" so I'm assuming you meant whether or not it's like the real thing. Well, if the description doesn't work, it won't usually hurt to download it so you can see if you like it and uninstall if you aren't pleased.