How do I make a bootable cd?

[Yu,Glen [Ontario]]

Hi,

I'm looking to back up my kernel and make a bootdisk prior to recompiling the 
kernel, but we don't have a floppy on our system and hence can't use mkboot.  
We do, however, have a CD-RW, so I was wondering what the mkboot-equivalent is 
for making a bootable cd?

Thanks,
-Glen