Set up desktop preview of Aero Peek for Windows 7

The desktop preview function of Windows 7's Aero Peek is that when you stay in the mouse position for 1 second, it will make all the windows transparent, so that you can see your desktop, a useful function but also a bad place. 1 second sometimes happens to be transparent when it comes to the side.

1
Click Start, type Regedit.exe in the search box, press Enter to enter the Registry Editor.
If there is a user account control window popping up, please press “Yes 
2
Target to: HKEY_CURRENT_USER Software Microsoft Windows CurrentVersionExplorer Advanced

3
New DWORD (32- Bit) value, named "DesktopLivePreviewHoverTime”."
Set its key value to 2000, (2000=2 seconds) to set it according to your own situation.
The above is about the desktop preview function of setting up Aero Peek of Windows 7. The personal feeling is set to 2 seconds, which is much better than 1 second, because many times when you move the mouse accidentally, it is very painful.