I export from Poser in OBJ and use a converter to convert to 3ds. I think it's a restricted demo of 3dExplorer which still "saves as". Perhaps Poser 3dsExport scales inappropriately? It's a good idea to do as thgeisel recommends and load your new model into Poser, resize and position the model, export and re-import as this will then show scales for the model as 100% and positions as 0. It's very annoying to load a prop and find it has a scaling factor of 2%!