iMac 2006 audio drivers for windows XP

Hi,

I recently dug my old imac 20'' (2GHz late 2006) model out of the attic. I have upgraded its ram to 2gb and successfully upgraded the OS from 10.4 (the original OS which it was shipped with) to 10.6.

I then used bootcamp v3 to load Windows XP SP3 onto the machine and is running fine, except that there appears to be no audio. I have seen tutorials, for many versions of windows/bootcamp, that state i should put in the OS X disks (that came with it) into the machine to load the drivers. When I do this, windows can't open the disk. This might be because the disks are 10.4 but i'm not really sure?

I have also seen bootcamp offer a utility to extract the drivers and then burn a separate disk, however my version of bootcamp does not offer this.

I don't really need any of the other drivers, just the audio as everything else seems to be running fine, perhaps I could get the audio drivers from somewhere else?

I also tried downloading this: http://support.apple.com/kb/DL830 But windows doesnt seem to be able to open it.

I was wondering if someone could point me in the right direction as I don't know what to do next?

Thanks

Richard