Windows 7 - Microsoft office 2007

I have MS office 2007, and I wanted reinstall from ultimate to professional plus. After that on desktop appeared nameless folder, and I can't delete it. How I must delete that folder?
It's right-click menu contains only cut, create shortcut and delete. When I press delete, it says: "Are you sure you want to delete these icons from your desktop? To restore it later, go to Control Panel." I delete it, but when press refresh it appears again.

You can try this but I don't know if it will work: How to Delete a System File in Windows 7 or Vista - How-To Geek

that don't work, because it appeared from nowhere, and it is NAMELESS.
anyway, thanks for trying to help

Here is a program I found that people say works give it a try: http://ccollomb.********/unlocker/#download

at last, I managed to fix it
I closed "trustedinstaller" and "windows installer" in task manager.
Then reopen explorer process, and it disappeared

thanks all for advices

No problem glade to hear you got it sorted out in the end.