I forgot. If you export the obj from poser to uv mapper, uncheck ALL options. This is important. And when you re-import, uncheck ALL options. This is to ensure that poser doesn't alter your obj file. To rescale, you can scale down in poser before exporting. If you re-import as indicated above, the obj will come into poser at 100% on all scale dials, but at the smaller size you exported it at (and with no uv coordinates, of course, unless you re-map it). mac