Quote from NudeRaider
Have you tried changing ownership of the file to you? This option is a bit buried within the security tab -> advanced.
Yes, I couldn't do anything besides move it to an obscure folder and hide it without the password. It's only like 200 kB, and the previous owner was a sharepoint architect, so he knew what he was doing. More than me anyway. I'll get around to removing it some day. Probably with Windows 8.
None.