Here’s a simple trick to Disable/Remove Balloon Tips in the notification area of Windows XP. Balloon Tips are helpful in some situations but are also annoying in many situations.
How to Disable Balloon Tips
Warning: Backup the Registry before modifying it. Modifying the Registry incorrectly might lead to serious problems to your Operating System. Therefore, Make sure you follow the following steps carefully.
Goto Start then Run and type regedit.
Goto Following Subkey
Now right click on the Advanced folder and select New > DWORD Value and enter name as EnableBalloonTips.
Set the value of the EnableBalloonTips to 0;
Now Log Off Windows and log back on. Your Windows will not show any Balloon Tips.
If you want to Enable Balloon Tips, then delete the new DWORD Value EnableBalloonTips that you created.