How do I change/edit the name of the owner of a file?

Here is a picture so you can see what I am talking about.

http://img441.imageshack.us/img441/1470/ownerhelp.jpg



I want to edit the name but I don't know how. My PC is running Windows Vista Ultimate 32bit...How do I change/edit the name of the owner of a file?that link is dead. did not see. not sure what you are talking about.