Hi Ivan,
Yeah, I kind of figured that SKJ is outdated since it has been out for a while, but it gives a nice variety of Russian planes and traffic with an extremely simple install. Don't worry though, I use a few of the RATS traffic stuff as well....it just takes longer to track everything down and install properly! ;) (On a side note, have you guys ever considered creating automatic installers that cover all of the airlines in any of these particular categories? I'm sure that would get a lot of people's attention, and would enticing be to simmers not familiar with adding traffic:
http://trafficsystem.ru/projectseng.htm) ;)
Allen,
In your Scenery/World/Scenery folder, there should be a traffic bgl that says traffic030528.bgl or some random series of numbers. This is the microsoft default traffic file. What you can do is delete that, thus clearing all default airlines and GA, and if you want just the GA (general aviation) back, you can do a search for a replacement at any major flightsim site. I use worldga.zip available at Avsim.
For more Russian AI, go here Allen:
http://trafficsystem.ru/fileseng.html