Plug-Ins
 

Is there a .3do import plugin for Maya 8? I cant seem to find one anywhere...

This converter can do it: http://web.axelero.hu/karpo/

The free version can load anything, but not save in all formats. What you need to do is find a format that it will export, that you can use another converter to change it into an obj. Kind of a round-about way of doing it, but it works.