How about something like this:

Code:
on *:TEXT:*:#:{
  if ((#channel1 == #) && (hi == $1)) { msg $chan Hi you all! }
  if ((#channel2 == #) && (hi you all == $1-3)) { msg $chan Hi you all! }
}


or you could simply do:
on *:TEXT:!hi:#channel1:/msg $chan Hi you all!
on *:TEXT:!hi you all:#channel2:/msg $chan Hi you all!

those help?

Those who fail history are doomed to repeat it