Are you really worried about the OP (who can't google for smbclient) writing an efficient messenger service spammer with perl? With the amount of work he went through for his original post, he would be lucky to make his loop break out of his local network. =)
Also I have very little sympathy for people that can't figure out how to turn off the service or block it with their router -- maybe the messenger spam will annoy them enough to get them to stop using their computer before they end up clicking on the next worm that hits their inbox. =)
Sorry I am so cynical today, between EMC and Lotus Notes I am very frustrated.