What’s the Left section of the files pane called. . .

in windows explorer (win9x – win2K)

the one that’s supposed to show:
– a mini version of Media Player
and previews of:
– recognized image types
– web pages
etc.

http://i832.photobucket.com/albums/zz249/WhatNameShoudIUse/WMP9Fail.png

I’ve been trying to search for,
how to fix the problem seen in the pic
but can’t because I don’t know what that particular section of the window is called

if anyone has any ideas about how to fix the problem
which is;
the mini version of the Media Player isn’t displaying correctly
nor can it play any audio / video files

only the full Win MP9 application can play A/V files