Thumbnails

I am running Vista Home Premium and have been trying ot view thumbnails of
..jpg files in a folder. Following the instructions under "Help" - As
here:...................
To view thumbnails of pictures located in a single folder
1.. Click to open Pictures.

2.. In the Navigation pane, click the folder that contains the pictures
you want to view.

All of the pictures in that folder are displayed.

3.. Click the arrow next to the Views button, and then move the slider to
change the size of the thumbnails.

.................does not not help. All I get are the icons.

Can anyone help me with this?

TIA

Ed