Missing folder backgrounds on Vista ultimate

Hi,

Whenever I open a folder, I used to see a large picture of folder with the
music icon or the CD icon inside in the background. But I am not seeing them
any more and I have tried several settings change in the "folder options"
from the control panel and also the "customize" options on the folder but
still I cannot see them.

By going thru the articles on the microsoft web, I could understand that
when we go the "Customize" options on the folder, there are options to choose
from the drop down - like Music detail, documents... and selecting these
options would change the background and I have tried them without success. I
have also tried the reset option but no success.

The OS is Vista Ultimate SP1

Please help me out.

Thanks,
Nagesh NC