<name> <password>
Registers <name> with the given password <password> and the current
hostmask of the person registering. You shouldn't register twice; if
you're not recognized as a user but you've already registered, use the
hostmask add command to add another hostmask to your already-registered
user, or use the identify command to identify just for a session.
This command (and all other commands that include a password) must be
sent to the bot privately, not in a channel.