15 min work ... http://www.ifixit.com/Guide/Repair/MacBo...-Pro-15-Inch-Core-2-Duo-Model-A1211-Optical-Drive-Replacement/461/1

(looks like normal pata interface - so you ll need the = OBHD9-SATAB (9,5mm)

or OBHD-SATA (12,7mm) or OBHD-SATA (12,7mm) ==> !! => for this case you ll need to resize the high by yourself .... just remove, let the lid out.