Add Models or Software update

[jimccopter]

At one time I added more planes and Helicopters to my FMS Flight Sim. I recently purchased an RC Mirage from Nitro Planes. My problem is, after reinstalling the Flight Sim, I can't remember how I added the other planes and Helicopters. I am especially looking to get a jet or two on the Simulator. I have the FMS version 8.3. What do I need to do to get some more planes or jets ?:

Thanks much,
Jim Contant

[lowglow]