True, everyone probably learnt this tip a hundred years ago when XP came out but if you’re a Mac user like me that’s running XP on the side you’re probably as annoyed as I was with those stupid little balloon tips popping up in your taskbar every five seconds!

Here’s how you get rid of them….

Warning: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

1. Click Start, click Run, type regedit, and then press ENTER.
2. Navigate to the following subkey:
   HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
3. Right-click the right pane, create a new DWORD value, and then name it EnableBalloonTips.
4. Double-click this new entry, and then give it a hexadecimal value of 0.
5. Quit Registry Editor. Log off Windows, and then log back on.

(Source: Microsoft’s Support Article)