MBP Optical Drive not reading cds or dvds + LaunchDaemons not in Library

Late 2008 MBP, 4gb, ram 2.66ghz, Mountain Lion 10.8.4
Hey this is my first time using this forum but I'm not computer illiterate so please don't waste my time!
My optical (disk) drive in my Late 2008 MBP is not reading dvds or cds.
I repaired disk permissions to no avail.
I had read another thread on this issue saying I could opene my library to see if i could find and delete  com.WD.WDDDriveServices.plist. which I had seen had worked for others who had had a 1tb WD external drive and had had their disk drives stop working because of this. However, when I went into my library the LaunchDaemons folder which was supposed to contain this erroneous file LaunchDaemons was not even there! Is LaunchDaemons called something else on Mountain Lion or what? I went through all my plist files and could not locate com.WD.WDDDriveServices.plist. anywhere! It is my hope that if i can find and delete this file that I may be able to reboot and have a working disk drive again!
(note)
I could play DVDs but not CDs up until I upgraded to mountain lion 10.8.4, but after the mountian lion upgrade now even DVDs won't work.
Can anybody help me resolve this issue with the Missing LaunchDaemons folder, or have another suggestion beyond repairing disk permissions or deleting com.WD.WDDDriveServices.plist.  to make my optical drive work
I am hoping can resolve the main issue at hand which is my optical drive, but also any help on locating LaunchDaemons would be appreciated.
(I know there has been a few threads on this topic, believe me I've practically read them all, for most repairing disk permissions worked, for others who had a wd 1tb external hard drive (like me) deleting com.WD.WDDDriveServices.plist. worked, but that isn't an option at this moment since i cant even find LaunchDaemons in my Library lol.
PS.
Please don't be a smartass and say get a new optical drive, I know my MBP is old but I think the problem is not really with the hardware but rather with this absent LaunchDaemons folder.
Thanks in advance.

Likely not. Your next step is a call to AppleCare or a visit to a repair center.

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