Talk:Wireless Modem/@comment-74.73.231.42-20121015032514/@comment-76.175.17.28-20121213010137

use rednet.broadcast("message") instead of rednet.send(id, "message")

the rednet.broadcast sends it to ALL computers/turtles in range, so as long as your turtles are all receiving, they will receive and execute the command at the same time.