Hey guys, the superdrive in my Macbook (white) of two years is starting to fail. It can still detect the disk but it will stop running after a while, especially during long installations. It sounds weak to a point and at some point, there will be a *thack*-ing sound coming out.

Could you give me some idea of what it is?

And if I have to change the drive, could you tell me which superdrives (DVD) should I be looking at and how to change it? Don't have enough cash to get it done in the workshop. I'm in Melb right now and the labour cost is really high.

The assistance would be greatly appreciated.