dcasey, P3dO has Drag and Drop capabilities. It is not as perfect as the one in Windows but it should be enough to fullfill your needs. As Wizzard and Viomar said I suggest you organize your Pose files yourself - outside Poser - and use P3dO to copy them back when you need some. I'm currently thinking on a new P3dO Plugin which will Copy-To (does already) and Copy-Back the files once you've done the job. "PC Installer" plugin is scheduled late December or early January.

Yarp - author of P3DO Organizer for Poser