move into the /etc directory and use a combination of find and grep to see what files contain the name "alfred":

      find . -type f -print | xargs grep -i alfred

I'm sure it'll be in at least /etc/hosts, /etc/nodename and /etc/hostname.xxx (where 'xxx' is your
 network interface name, like en0 or hme0). It's possible that it might also appear in any of the following 
too: /etc/net/ticlts/hosts, /etc/net/ticots/hosts, /etc/net/ticotsord/hosts and /etc/inet/ipnodes.

Anywhere you find "alfred", change it to the hostname of your choice. Don't use spaces or punctuation 
in the name, however, to ensure that no Solaris applications trip up or get confused.

That should do the trick. Reboot and you should have re-christened your Solaris 9 system with a new 
hostname!