If you are able to complete the Transfer of Ownership form you might be able to get replacement CDs. Otherwise Fireblade's suggestion is probably the best way to go.
From what you describe, it sounds like the hard drive has failed (the clicking you describe makes me think the read/write heads are banging against the side of the drive casing, aka the click of death). What happens if you remove the hard drive from the system? If you have another computer of the same type you could also try booting with its hard drive in your system to verify your hard drive is the problem.