Regarding resetting the NVRAM bits, especially the MAC number:
If it has a disk, dmesg is your friend (on SunOS anyway, too lazy to fire up
the Solaris box). The MAC address is saved in the syslog each boot. I seem to
recall that the Sun NVRAM FAQ doesn't point this out, but it saved me from
having to "invent" a MAC on my IPX
-Scott Quinn