Rednet/variables

So I have a setup where the user types in the message they want and the computer sends it to a second computer that just 'listens' and then puts it up on its monitor. How do I get the user input saved to a variable and passed to the second pc?

print("What would you like to send?")
local msge   //?
input = msge
rednet.open("top")
rednet.send(6, msge , true) //?
rednet.close("top")

write("Enter Message: ")
input = read()
rednet.open(side)
rednet.send(id, input)
rednet.close(side)

and then for recieving

while true do
id,msg,distance = rednet.recieve()
-- do stuff with msg
end

replace id and side with relative sides and ids

Thanks a lot man!