The tiff's are textures, the XFR's are XFrog files (only to be opened in XFrog), the 3DS files can be converted to OBJ in Poseray. Search for Poseray on the web (it's free and very handy!), read some posts regarding Poseray in this forum, and you're off. Once saved as an OBJ, you can import in TG2, check the internals, adjust and save as (native) TGO. Good luck
---Dune