warning -> linux n00b

I'm having real trouble trying to get sound to work on knoppix. unfortunatly i dont have space or time to install it as a full os. I have a Soundblaster Audigy (as the title says), and whatever i have tried doesnt work. the closest i have come was using modconf and went to kernel/drivers/sound/emu10k1
i tried it without parameters, but it has trouble. it gives me the error:

Installation Failed.
depmod: Can't open /lib/modules/2.4.22-xfs/modules.dep for writing
cp: cannot remove '/lib/modules/modprobe.conf.old': Read-only file system

i think this is because it is booting off the cd. is there any way to fix this? is there a chance i could do it without reburning the cd, or would that be a better option?

thanks

OmegaOne