Here at my dad's, the computer runs Windows 2000 (it's simply not fast enough for XP). You cannot log off on Windows 2000 without having your running applications closed. Sometimes when I need to walk away for 10 minutes, I get worried that someone will open mIRC and start talking or see what I've been talking about (or the *cough*words*cough* I've been using). Thus:

I'd like to be able to minimize mIRC to the tray and make it not accessible again unless I give the password.

If this is already possible, my apologies