I tried couple of method I can think of to deete the folder...
1. Move folder to Recycle Bin
2. Cut and paste the folder into some where else.
3. Delete the Folder in command prompt.
Give me break I dont know how to type the folder name. I tried to type "rmdir
Access is denied
Finally I Google it Found the answere .... This is the link I found
Try it ifyou have problems deleting any of your folder. It works in Winodows Vista.