how do you put the aircraft on the game after you have downloaded them.also dose anybody know were i can download all the recent flight companys. example- thomas cook,mytravel,monarch,klm,thomson,lingus
You can download some of them from the site here. Or somewhere like avsim.com or Project Open Sky.
This should help you to install new aircraft.
And you can get new aircraft with the "Labels" you want where he said.