The OpenQNX project just released Xvnc 3.3.7 client and server for QNX 6, available for download at the usual project site.
VNC stands for Virtual Network Computing. It is remote control software which allows you to view and interact with one computer (the "server") using a simple program (the "viewer") on another computer anywhere on the Internet. With the help of phx, Microsoft Windows users can VNC into QNX6 box for accessing Photon applications as if using the commercial phindows, for free.