Size of my Cd-Rom (SATA) I have a macbookPro 15'' mid 2009 and I want know which size is my cd-rom (SATA)because I have to buy this "component"

where can I find this information ?
My Cd-Rom is 9,5mm - SATA/SATA ?
Your MacBook Pro has indeed a 9.5mm SATA SuperDrive.