Cheers, yeah I am from the UK. Though it says that the drive they use is only fully supported under OS X 10.5, and i'm using 10.3! I might just buy an external one. Thanks for your help.
Any ATAPI CD/DVD-Drive works with Mac OS X, thanks to generic drive support.
Replace it yourself, a DVD-Burner is like
£10 (I have the S222A in my PowerMac, it fits in the iMac as it's short). Get canned air and clean the interior while it's disassembled. In the same step, I'd install
1GB of RAM inside and install Leopard (Mac OS X 10.5) then. You also need
thermal grease when you reassemble the machine.
If you are comfortable with a soldering iron, you could also
overclock the iMac to 1.25GHz.
As you need thermal grease anyways to reassemble the machine, renew the thermal grease on the processor. First clean both the CPU and the heatsink with pure alcohol or lighter gasoline and Q-Tips, then put the amount of half the size of a rice grain on the CPU and spread it with a toothpick to cover the whole black area in the center with a very thin layer of thermal grease, then put the metal heatsink on top and secure it with the clamps.
Also, I'd replace the fan with a
silent one.
For around £50, you'll have a pretty good machine then.
Btw, your iMac supports large hard drives, so you if you feel like spending
£120 on a 2TB hard drive (and
£12 on an IDE-SATA-converter), it's possible.