User Account Control in Windows Vista extends to the Command Prompt. If you get a "you do not have permission..." error, it's probably because you need administrator permissions to run the command. Here's how to run from the command prompt as administrator:
Click Start, in the Start Search box, type command. A list of of matches will appear above. Right-click Command Prompt in Programs list, and then click Run as administrator. You will likely be prompted for an administrator confirmation, or a password. Type your password or click Continue.
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