Now you should know better than most. Since you've at least been here for a while, besides the blatantly obvious English descriptions in which you obviously know how to read.
Code:
FlyFF Releases
Post your Flyff releases here.
- Exactly what it says, for RELEASING stuff.
- Not for help.
Code:
FlyFF Help
FlyFF help
- Exactly what it says too, for HELP topics.
As to stay on subject.
You open then with a 3D editor/Modeler.
As which could of been answered if you would at least try to google/search at all.
http://www.fileinfo.com/extension/obj