Customizable iChat Responces?

How would i be able to do something like this?

Jack: Hi
Me: Sup Bill, Im not here… I just want ppl to think i am, by not having a afk msg on!

Jill: Hello
Me: I dont like u, leave me alone!!!

Hill: Jack & Jill were rolling on me Yesterday…
Me: I’m not here… silly goose…

Either based on who sent it to u, or the message sent?

the first place to look would be ichat’s scripting dictionary, from a quick peek t seems to have log in and send commands. tis could be very cool, the firs AppleScript chat bot… if i get tme later, i’ll look further into it