Basically if you want to delete something which requires 'Full Admin Ownership' this'll do it!
Download: http://www.sevenforums.com/attachments/tutorials/78962d1276656458-take-ownership-shortcut-take_ownership.zip
Add the 'install .. ' registery.
and then right click a file and 'Take Ownership' should appear.
http://www.sevenforums.com/attachments/general-discussion/2639d1231815679t-windows-7s-partition-problem-2009-01-13_130115.jpg