The way you do this is simple: take the explorer.exe file from an XP installation, copy it to the target OS set compatibility mode to Windows XP SP2/SP3 open up task manager kill the running explorer process, and finally run the XP explorer.exe using task manager's run feature. So, a few weeks ago, I found a video on YouTube showing what happens if you take the explorer.exe from XP and run it on newer versions, so naturally, I wanted to try it on my own. I don't know if this has been discovered before, but I find it quite amusing, so I'm posting the story