Funny networking protocol, I think over top of RS-422 or the like. Sometimes they tunnel it over ethernet too. The serial port that the Macs have built in is generally called the "localtalk" port, and also used for printers, which speak some subset of this strange protocol, AFAIR. Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '