How to use Add-On Arenas in game?

Ok. So i'm pretty much a noob to modding NBA2K14, but I know the basics. If someone could please explain to me how to make downloaded arenas from NLSC work in game? For example, I downloaded the 1999 Delta Center, and it's file name is fDELTACENTER99.ff And that arena does not come up in game. What should I do to either have it in the list of Arena's to choose from to play in, or have it replace the current 1997 "Jazz Arena".

Please help me, and if you could, include the filenames for the retro arenas. example: f033.iff for 1986 "Bucks Arena"

(And Obviously im putting all these .iff's in the root folder where they go.)

the roster you have loaded needs to know that the arena file exists. This can be done by replacing a file that is already loaded by the roster in the default game (like a retro team or euroleague team), or by editing the arenas tab of the roster with RED MC (which costs $$$ for a license to edit).

Team IDs for floors and other files can be found here - viewtopic.php?f=154&t=94824