You don't need to boot, to try the configuration. Modify
the mentionated files and then:
ifconfig hme0 plumb
ifconfig hme0 <your_ip> netmask <your_mask> (and other options)
ifconfig hme0 up
NOTE: If the plumb fail, probably you don't have the driver
for the interface. Also, when you add hardware to a system
you need a reconfigure reboot ( "reboot -- -r " or "touch /reconfigure" an then "reboot")
Changing nodename and hostname.le0 did it, thanks for your help. I did have to reboot, however. ifconfig plumb did not give any errors, but did not resolve the problem, either -- that's when I rebooted.