.off import in Blender 2.5 or 2.49


I’d like to import a large number of .off files into Blender, I have run into 2 barriers:
(1) to my knowledge, there is no working .off importer for Blender 2.5
(2) the import / export scripts are not in the ./blender.scripts folder on my Linux installation (nor are they anywhere on the python path). This is strange, because I can import .off files (and everything else) via the GUI menu.

(1) Does anyone know of a working .off file importer / exporter?
(2) Does anyone know where I can find the file “off_import.py” on a Linux install of 2.49b? (Is that even the file name in linux? That’s what it was on a Mac that I was using).