Virtual Dreaming

The website:http://www.dreamguides.net/

Is this for real? They claim that they developed a new technology that allows the user more choice over the direction of their dream experience.It is a computer-assisted lucid dreaming tool with wide therapeutic applications.The Personal Dream software, somehow turns your PC into a dream unit.
There is even a book here:http://www.virtualdreaming.org/

Any idea what this might be about ?

very vague details about what it actually is. Plus atm seems to be very expensive and not a "gadget for home use"