Copy zbeos.bru and makecustombootfloppy to a new directory
Open a terminal, change to the new directory and run makecustombootfloppy
Reboot from the floppy.
If you like the new boot images backup the file /boot/beos/system/zbeos  
Rename zbeos.bru to zbeos and copy to /boot/beos/system

pirge 18/12/2001  http://pirge.cjb.net