Ctcp events
From Scriptwiki
These events respond to CTCP (Client to Client Protocol) requests.
ctcp <level>:<matchtext>:<*|#|?>:<commands>
This event works exactly like an On text event might, except to CTCPs.
Note: You can NOT change the CTCP VERSION requests. Khaled deserves credit, after all. For information on changing default CTCPs like PING or FINGER, see this page on customizing mIRC.