How would i go about configuring three etherchannel ports on a 4948 gigabit switch? I know there is plenty of documentation on etherchannels around but i kinda have to have this up and running by tommorow morning

So if anyone can give a brief example of what is best to use and the commands to do so, i would be very grateful.
btw the purpose of the channel is for load balancing when possible and of course failover.