GroIMP's POV-Ray plugin is used in two ways: At first, it
defines an export to POV-Ray's file format. This is available via
in the 3D view. You have to specify a
file name for the output, the POV-Ray scene will then be written to this
file. Some scenes contain additional image files, they will be written into a
subdirectory called scene.pov-files (where
scene.pov is the file name you have
chosen).
Secondly, this export is used to obtain a POV-Ray-rendered image of the current scene directly in GroIMP's 3D view. Just use the menu in the 3D view.