Hi Brian,
The tooltips in the QL and Taskbar can not be disabled. These are the one's
that can:
How To: Turn off the Balloon Tooltips and Pop-ups
Windows Explorer/Tools/Folder Options/View/Advanced/Uncheck Popup
Descriptions for Folder and Desktop Items.
TweakUI/Taskbar/Uncheck Enable Balloon Tips
http://www.microsoft.com/windowsxp/pro/downloads/powertoys.asp
Or use this automated edit:
Disable Balloon Tips or Disable All (Row 11)
http://www.kellys-korner-xp.com/xp_tweaks.htm
Disable All includes: Balloon Tips, Folder Contents Info Tips, Explorer
Pop-Ups, Show Info Tips, Start Menu and Notification Area.
To use the Regedit: Save the REG File to your hard disk. Double click it
and answer yes to the import prompt. REG files can be viewed in Notepad by
right clicking on the file and selecting Edit.