  We present three dimensional simulations of the interaction of a light
hypersonic jet with an inhomogeneous thermal and turbulently supported disk in
an elliptical galaxy, including Radio and multi-band X-ray visualisations.
These simulations are applicable to the GPS/CSS phase of some extragalactic
radio sources.
  We identify four generic phases in the evolution of such a jet with the
interstellar medium. The first is a `flood and channel'' phase, dominated by
complex jet interactions with the dense cloudy medium close to the nucleus. A
spherical, energy driven, bubble phase follows, where the bubble is larger than
the disk scale, but the jet remains fully disrupted close to the nucleus. Then
in a rapid, jet break--out phase, the jet breaks free of the last obstructing
dense clouds, becomes collimated and pierces the more or less spherical bubble.
In the final classical phase, the jet propagates in a momentum-dominated
fashion similar to jets in single component hot haloes, leading to the
classical jet -- cocoon -- bow-shock structure.
