These can be recognized because of the engine type mentioned in the filename. Then, thrirdly, there are different engine models.
The VC files can be recognized because of the "VC" in the filename. Secondly comes whether you want a VC or not. There are first of all two categories of files:- FSX files- FS9 filesThe difference is simple: FSX files have a FSX prefix in the filename. The POSKY download page is indeed horrible confusing, but there is logic. These can be found by simply clicking on the 777-200 link (not any of the tiny sub-links) So, if you would want the three 777-200 models with the different engines and VC, here's the files to pick:- GE90 engine with VC in pax configuration: VC>SP2A_GE90 Model (OS772V2_GE90_VC)- Trent800 engine with VC in pax configuration: VC>SP2A_Trent800 (OS772V2_Trent800_VC)- PW4000 engine with VC in pax configuration: VC>SP2A_PW4000 (OS772V2_PW4000_VC)I hope this clears it up somewhat. And finally, there are various cargo and pax models and such.