Run Thunderbird on startup, at system tray

This is something everyone wants to do with Thunderbird, make it run quietly on the system tray on startup, like it's part of Windows. Here's what you need to do: (instructions are for vista, should be similar to XP)

1. Install the minimizetotray addon.
2. Restart Thunderbird, go to tools->addons. Click on minimizetotray 'Options'. Check all three options.
3. Go to: "%USERPROFILE%\Start Menu\Programs\Startup", then paste a shortcut of Thunderbird.
4. Right click the newly-pasted Thunderbird shortcut, click on properties. Select the 'Shortcut' tab, change the 'Run' option to 'Minimized'.

There you go! Thunderbird should now run every startup, at the system tray.