That's a setting in folder options. http://windows.microsoft.com/en-hk/windows7/change-folder-options tells all you need to know. it's not really different from what it was in Windows XP, so I should havr assumed that after 14 years everybody knows. Apparently, I'm wrong.
Kees
PS. Don't delete those file if you don't know what you're doing.
I want to be able to browse every file on my windows 7 laptop, even protected, hidden system files. Thank you!

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