CD CHANGER, where??, fixing it down??

[kic]

where is your cd changer and how do you fix it down, most people would prob say boot and screws but is having it over suspenssion good, as it jumps??? and what do you screw it into??

help me please

 

[Beef-Mc]

Under the passengers seat, unscrew the holder thats already there, screw a CD changer support in then screw the CD changer to that.