With a script.

Look up mIRC theming scripts, as it's easiest to use a pre-made script, since there are a lot of subtle technical challenges in theming mIRC properly.

A simple script, however, would be:

Code:
on ^*:TEXT:*:#:echo -mbflirt # ( $+ $nick $+ ) $1- | haltdef


Again, I stress the word "simple".

- argv[0] on EFnet #mIRC
- "Life is a pointer to an integer without a cast"