Audio Systems: radio removal and reinstall-volvo, facia, two tools

Question
I purchased a cd changer (direct wire hookup) for my 2004 Volvo.  I need to know how to proceed in removing the radio form the vehicle and then replacing same after I attach the cable.

Answer
Hi Robert,
2004 Volvo what?
Radio either removed by inserting two tools, one each side with the front panel surround off and releasing the unit from the frame or removing the knobs and facia and removing the frame that holds the unit in the dash then removing the radio from the frame.