I unable to create drive in windows 7 how create it, how send msg
to local host through cmd in windows 7 and how to login adminstrator in windows 7

Did you 'create' drives in other OS versions? How?
What kind of message you need to send to local host?
The administrator account is disabled for severe security reasons. The system asks you permissions every time this account is required so basically you don't need to use it.
Any way, you can enable the account opening a cmd console then issuing a net user command to set it to active

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