How can I lock a folder so that it CANNOT be erased?

On my computer running Windows XP Pro SP3 I have a folder on my desktop that is very important. How can I lock it so that I can alter anything in it, but the folder itself cannot be removed without resetting a (lock/unlock?) switch?


You can set the "Delete" and "Delete subfolders and files" permissions to "Deny" under Properties → Security → Advanced.

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