Alrighty then,
I already had to tell Pete about a PT aircraft in the FSX section that someone hacked and uploaded a while ago, and now it looks like their is at least one that I missed in the FS2004 section.
http://www.simviation.com/fs2004jets112.htm
^^ I don't know if this was hacked, but besides that, this is an old version! The newest version is v9.6.1. http://www.simviation.com/fs2004jets62.htm^^
I also found one on here, but this does not seem to be a Project Tupolev aircraft.I haven't seen the newer M model on here yet...
I believe the only way to obtain the most recent, non-edited, editions of the Tu-154 series is to go to the official site and download them!
Also, the team's Tu-154M and the Tu-154b2 will NOT yet work properly in FSX!!!
As far as needed components though, everything should be included to fly the aircraft properly after installation in an official download, the issue is just third-parties trying to make the aircraft easier to operate. ;)
Thanks for the info Boikat, it is appreciated. :)
Using the b2 model from here would also explain your compatability issues. In the newest version, they removed the necessity to manually register some gauges through FSUIPC. I'm sure if you try version 9.6.1 of the Tu-154b2, you will have zero problems.
Don't forget to try out the latest version of the Tu-154M as well! It's great, and even has more systems simulation than the b2 does.
Hopefully Dragboat is on the way to figuring out his problems as well! ;)