Read only files in windows 7

[NYM]

Hello,
Cant change read only files in windows 7. Tried using properties and attrib command, both failed. How do I change the files to read/write?

 

[Gandalf]

http://www.howtogeek.com/howto/windows-vista/add-take-ownership-to-explorer-right-click-menu-in-vista/
This should work with Vista and/or Windows 7.