Windows 7 theme leftover .jpegs

I was trying out the themes that you can download from Display Properties that you can get online. So I tried maybe 10 themes and chose one that I liked and Win 7 is saving all the jpgs from all the themes after I deleted the themes. The theme pictures are hidden in this folder.

C:\Users\User\AppData\local\Microsoft\windows\themes\Tale of Cities(example)\DesktopBackround

Now Win 7 will not let me delete them separately. Says I need permission from Trusted platform crap.

How do you dump all these jpegs?

KRAP!

Start your computer in Safe mode,
open C:\Users\[Your user name]\AppData\Local\Microsoft\Windows\Themes,
delete the unwanted folder(s),
restart the computer in the Normal mode.

?

Thanks, I was thinking that might work. I did not want to go in and change permissions on those files just to delete them. Thanks I will give that a try.