In this video, we learn how to tweak Aero Peek and Desktop Live Preview on Windows 7. First, go to registry editor, then current user, then software, then Microsoft, and go down to Windows. After this, click on current version, explorer, and advanced. Now, right click on the white space and click "new keyword value" and name it "desktoplivepreviewhovertime". After this, double lick and change it to decimal, then change the value data to 10. Next, create another keyword value and name it "ExtendedUIHoverTime", then double click on it and make the value 100. Now, create one more and name it "ThumbnailLivePreviewHoverTime" and make this a decimal with a value of 10. Now, close everything and log off your computer. Once off, log back in and everything will be a lot faster!