IRC Options

Show short joins/parts

Checking this option makes mIRC display the join and part messages in a different, more compact format.

Show user addresses

Display user addresses in events such as joins/parts/quits/invites on channels.

Show nicks on join

Displays channel nicknames in the status window when you first join a channel.

Flash on...

These set the default flash option for any newly opened channel, query, or dcc chat window.

Skip MOTD on connect

This makes mIRC hide any MOTD information which the server sends you when you first connect to it.

Hide ping? pong! event

Occasionally an IRC server will send a ping to mIRC to check whether it is still connected. If you prefer not to see the "Ping? Pong!" message in the status window you can enable this option.

Cancel away on message

If you set yourself as away using the /away command, selecting this option cancels the your away status automatically the next time you send a message to a channel or a query/chat window.

Hide away reminders

Hides repeat away messages in active query windows for ten minutes.

Events...

The events dialog allows you to change the default display settings for channel-related events, such as joins, parts, etc. You can change the settings for individual channels via the System Menu of a channel window.