Can't erase .wmd - .wpl

Hi all,

scanning for "Issues", CCleaner find always these 2 invalid registry keys (see pic),

also just after the cleaning. I think they have something to do with Media Player 9. :mellow:

I tried to delete them manually, using Regedit - HKCR, but Windows (XP - Sp2) says

"Error - Impossible to open" at the right click.

Any idea? :huh:

Thank you in advance :)

post-3287-1162029399_thumb.jpg