Blender .OBJ Conversion to FF7

Hiya. I followed a guide that I saw here (
but know I have the model and pretty much don’t know how to convert it, so that I can use it in FF7.
I know that I somehow have to cut the parts (head, hand, leg… ) with Blender and export them to single .3ds files, but I don’t know how. Any ideas on how to accomplish this?

Btw, this is a fully textured skin.