When you are playing a game or somthing and you want to know when somthing has been said this is the script. Just press alt+r and copy the script and edit your channel name.So mine is on :TEXT::#mirc_cracker{ /beep 6 } }. Then press ok and your set! - Im sorry if this isn't what your looking for but ask me and i'll make one to your need's.
on *:TEXT:*:#[channelname]{ /beep 6 } }