from what i know, you cant import IGBs if your trying to add them into 3ds max. all you can do is export IGB files in 3ds max 2010.
i dont exactly know what you mean, but i do use the alchemy exporter for 3ds max to export IGBS to import into project diva. im actually trying to learn how to get it working myself so i dont know if i might help as much. there is a thread where i asked how to export IGBS from 3ds max using alchemy and someone explained it, althought they are making a tutorial for exporting custom heads and bodies soon.