From:
/help Display OptionsTransparencyIf you're running mIRC under 2K/XP, you can enable
transparency for any mIRC windows that you place on the
desktop.
1. File
2. Options (Alt-O)
3. Display
4. Options
5. Transparency button
Transparency works only on desktop
windows.
Enable tranparency:
[ ] Status [ ] Chan list [ ] Links
[ ] Channel [ ] Finger [ ] Custom
[ ] Chat [ ] Url List
[ ] DCC [ ] Notify
Transparency: [0% to 75%] (in 5% increments)
[ OK ] [ Cancel ]