See if it created a polynurbs.mse script in your scripts folder C:\Program Files\Autodesk\3ds Max 2012\Scripts\LuisLlamas It created it for me but it seems the macroscript doesnt call it for some reason. You can drag that mse file into your viewport and it will bring up the dialog so you can test it out.
You can try this: http://www.luisllamas.es/maxscripts/polynurbs/#.UIYT2cXA8TY I've actually been wanting to test this script out for this very reason but haven't had the chance to.... Let me know how it goes. Edit: yes this turns it into nurbs but you can use the surface deformer with nurbs just like the patch deformer I…