Hi,
That's fairly simple - just put a floppy in the drive then do as root :
/sbin/mkbootdisk --device /dev/fd0 2.4.14
(where 2.4.14 is the kernel version you want to make a bootdisk for. Usually, this would be the current kernel as indicated by the 'uname -r' command )
If it doesn't work you probably don't have the 'mkbootdisk' rpm installed.
Regards