I can't recall the name of it, but I know that the software and hardware already exist. I read an article about it a couple of years ago. You setup a series of sensors for a variety of environmental factors, program your desired parameters, and the PC does the rest. Misters or humidifiers are triggered when its too dry, heat goes on/off etc.
Its a great idea but the price tag was a little on the high side. I've got an idea that goes a step further, but I'm a stumbling idiot with the computer, so it'll have to wait until I can brainstorm with a qualified programmer.
Revenge is a dish best served cold...
With a side plate of steaming entrails,
And a nice Bordeaux!