I fly a lot in flight simulator, especially online under human ATC. I use flightprojectfor that.
Just recently Flight project developed a new "virtual transponder" that works wonders with FS 2004, the ATOC Pilot Client (IPI-ExPress) - Version: 1.9j . All you have to do is install it, create an account on their web site, enter your account in the transponder (you do it only once, during set up) and up you go.
Most of the online flight services have complicated installation of all sort of software. FPI (flight project) has the best installation. YOu just install one thing, once. And you are done. It comes with everything, transponder, radio, integrated voice with controllers. You can even switch frequencies on the aircraft radio and it will automatically open a voice channel to that controller, if the controller is online. It's freaky!
Anyway ... here's some pictures:
Here I was practicing touch and goes with the Captain Sim 727:






It's quite a rush to start a touch and go with a big-ass jet like the 727. You raise the flaps, go full power and you can feel the engines charging up and pushing while still rolling on the ground.
The 727 by Captain Sim is really good in giving that feel of "jet engine power".
This instead is a flight (at night ... a little dark) with an Airbus 330 (by PSS) from NY to Jacksonville ... still under FPI ATC.








Planes have the livery of the VA I belong to: Cyber Air
Yes I am a bad boy ... :( I spend a lot of money on payware models. I am a sucker for beatiful planes. :-/