1) iNo.....Again , those service centre here in malaysia....<not going to say it out anyway>

2) Its just that sometimes the disc gets stucked....Read here

http://guides.macrumors.com/Force_Eject_a_Stuck_CD_or_DVD

http://silvermac.com/2006/dvd-stuck-in-macbook-pro/

I suggest you to read both of them

I suggest to read up

Another method is to press The mouse key when the PC boots up , it will force the DVD out. I had this problem once. Then with the help of thick cardboard , i managed to pull it out....Thats life