Currently all other library browsers suffer from the defective socket.py in Poser 8 and thus cannot load content via PRPC. I haven't checked if you can just use Poser 7's version yet, just played a bit with making PRPC integrate into Poser.

You can use the "drop box" Python script provided by D3D though to drag and drop files onto it and have poser load the files... So Window's explorer will work, but that's not my idea of loading content ,-)