Your First Chatting Software

The first time i know internet, i don't even know the meaning of chatting. Then my friend tell me about a software Called mIRC. It is a chatting software that provide a lot of channel / room. After that i often go chatting, but until i met yahoo, i only chatting for fun and not using it for communication since i cannot have a permanent userid in mIRC. I use mIRC for the first time in Year 2001. Can you tell us about your first chatting software and your experience using that? When the first time you are using it? Please share it with us.