While it may not be in your current beta, you can do this in the other versions of Parallels. It will require that you understand that this is virtualization, not just another desktop app. You will have to know how to network computers since the drag-and-drop is implemented as a network connection between 2 distinct computers on your network - just as if you have a windoze machine networked to your machine. This method is common to all virtualization technologies that currently exist (VMware does try to mount local drives, but not very well). Exchanging data between the host and guest is currently possible, and if your choice of host and guest supports it, drag-and-drop already works.