because he was talking about a bot, a BNC won't do.
a BNC just works as a middle station to keep your nick online at the server side. your client will still go offline. so maybe your bots name will be online but there will be no bot behind it to react on anything.
if you want to have a bot which is always online you need to switch to unix/linux/bsd and run an eggdrop (or scripted irssi client in a screen)
or you need a windows machine which is on 24/7 with a decent internet connection.
