Q:

How can I reduce the delay before window previews are shown in the Windows 7 taskbar? 

I really love the preview feature of the Windows 7 taskbar.  There's only one reason I don't use it more often -- it takes a relatively long time to display the actual window. 
There is a registry trick (widely found on Google) to reduce the delay used by general menus, and make the submenus open instantly when hovered upon.  I'm wondering if there's a similar trick that can be used for the Windows 7 taskbar's previewing. 

A:

Here's a link to a similar registry trick : http://www.techtalkz.com/windows-7/516236-how-modify-mouse-hover-time-windows-7-a.html
Run Regedit, go to  HKEY_CURRENT_USER\Control Panel\Mouse
adjust the MouseHoverTime data which is in miliseconds.  Default is 400. 
Enjoy :) 

