Build thumbnails cache for a folder and subfolders in Windows 7

[Elancore]

Is there a way on Windows 7 that makes Explorer generates thumbs for folders without scrolling through them?
I tried something like a search (*.jpg) on the main folder but then only visible images had thumbs generated.

Thanks a lot.

 

[Elancore]

My problem is..

I have a lot of hi-res images in many folders, when I open a folder, windows explorer generates thumbnails for the images... But, because they are hi-res, it takes about 3 seconds for every image to have a thumb.
I'm looking for a way to make thumbnails for selected folders without having to open them one by one and waiting for every image, also I have to scroll down every time to get more thumbs generated

Thanks for any help.