Hi Nitrous3! I think I might be able to help you!
WARNING: This may not work, but I'm pretty sure it will!
First, just open your .obj file with Blender (you can download here for free:
www.blender.org) and just watch this video to help you do that:
https://www.youtube.com/watch?v=5t2Ntn6JDAY! Then watch:
http://youtu.be/yKCa6uQDm0E?t=2m5s to learn how to export it into a object format readable by Alice! (Video by Seth Funk!)
Hope this helped and if you have anymore questions just let me know!
Connor + Alice Forever! (-:
Website: www.mccgameco.com
Have a nice day!
Also, I've been gone for a really long time, more than I can even remember and am now going to be way more active! :-D