Sadly with the MacBook there is no hole for a paper clip.

Which needless to say is an absolute pisser.

I have to agree with Dan, the clicking noise is almost certainly the hard drive. I would love to know the make of the disk itself because there has been some problems with Fujitsu disks, not just in Macs.

Anyway, to eject the DVD/CD make sure it is powered off, then press turn it on holding down the F12 key.

Just tested it on my own MacBook and it worked.