Brief description of how to build a LiveCD image;
ftp http://kaw.ath.cx/dl/pub/OpenBSD/LiveCD/tools/tools-4.0.tar.gz
tar xvzpf tools-4.0.tar.gz
cd tools-4.0 rm bsd.orig cp bsd bsd.orig(Or compile your customized kernel using tools-4.0/lib/RDROOT, then copy it to tools-4.0/bsd)
cd cdroot.dist (cd YOUR-OPENBSD-FILE-TREE && tar cpf - .) | tar xvpf - .
make livecd.iso
cdio -f /dev/rcd0c blank ( <- Only for CD-RW ) cdio -f /dev/rcd0c tao livecd.iso
That's all.