"Windows Explorer extension" not work

Hi, the "Windows Explorer extension" not work on my Win 7 32 bit.

I select it on files and on folder but not do anything.

I installed Defraggler in D drive and i see that there are "defraggler_list.txt" and "DefragglerShell.dll" files.

Are these files to move in other folder?

(sorry for my english)

Thx