Hi waycomp2002, yup it's a command-line tool.

See the page here in the "How to use ?" section for some instructions:
http://wiki.secondlife.com/wiki/3dm2sculpt

Also you can't convert just any kind of model that you create in MoI, because Sculpt maps are like a rectangular sheet. You can only convert an untrimmed surface and not something like an object that has been trimmed or booleaned from multiple pieces.

- Michael