WiDi

Just got a few quick questions about WiDi if anybody has any past experience:

  1. Is it possible to install WiDi on a computer if it fulfills intel's requirements (i'm going to swap my WiFi card and already have the correct graphics, processor and OS). I keep finding posts on intel's forums where people are having problems where Intel say you can't unless it was preinstalled, but then there are also instructions on how to install the drivers and software on compatible computers....
  2. If I do get WiDi working, does it just work like an HDMI cable and I can just use a second display like normal?
  3. Are there any WiDi adapters for monitors that aren't super expensive and actually work? I've heard some bad stuff about adapters being quite flakey, which i don't really want...
Thanks!