| right click on computer in the start menu and select properties. |
Then select advanced system settings and then performance. In
that dialog will be an option for show thumbnails instead of icons.
If you want to have themes so it looks like windows vista, go to
server manager>features> add features, and then add desktop
experience. To get the very fancy aero theme, you have to (after
the other steps) go to Configure>Services>Themes>Properties
and set the theme service to start automatically.