Is the object a part or an assembly? If it is an assemlby and depending upon how you assembled it, if you reorient the first part, the rest should follow.
If it is just a part and you are looking for just the rendering, you could creat a dummy assembly of just one part and orient the part in that assemlby correctly, but I would use that assembly in anything other than the rendering so as to not create a bunch of clutter.
Thanks, Dale