its a bunch of work involved, but pretty much u have to take that whole center piece out with the heater controles and everything it come out one unit and then u take the radio out from the back of it..i think theres 2 screws underneath the dash. and the rest and held on by push clips for that hole unit. il see if i can find someting to explain better but hope u got a idea
why r u tryin to take it out, if u r just tryin to get the code just turn the car and radio off press the 1 and 6 turn the car and radio on while holdin the buttons and the serial number will appear, if ur not doin it for the code its alot of work wit the center piece. good luck, im me if u need more help (i work for honda)