I have always found it bothering not to be able to view the image thumbnails inside Windows Explorer in Windows Server 2008. What I did to solve the problem and be able to view the thumbnails, is go do the following:
- Inside Windows Explorer, go to Tools menu
- Select *Folder Options*
- Select the *View* tab
- Deselect the first checkbox "Always show icons, never thumbnails"
That's all what you need to do :)