You need to run it "As Administrator". Just having an administrator's privileges is not enough, you also should run it with "elevated privileges". This is how:
http://www.sevenforums.com/tutorials/11841-run-administrator.html[
^].
This is related not just to the batch, but to all applications and everything you do which may require privilege elevation. Please see:
http://en.wikipedia.org/wiki/User_Account_Control[
^].
In fact, you simply should not do such thing with the root directory of a system disk (if "C:" is your system disk, which may be not the case). This is not a legal directory for putting your application stuff. What is legal directory, depends on your goal. Refer to system documentation. Anyway, if you need to create some directory which would not need UAC confirmation, create some directory and perform required administration of its properties, under "Security" tab. But this administration will itself require elevation of the privileges, of course.
Another option is to switch UAC off, but I would
strongly discourage doing so.
[EDIT]
And you got "file is not found" simply because it's not found. Do you really understand path names and command syntax? Just check it up.
—SA
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