grant administrators and change access to files and folders

 icacls "e:\program files" /grant administrators:F /t

 icacls "e:\program files" /grant {USERNAME}:{PERMISSION} /t

icacls <FileName> [/grant[:r] <Sid>:<Perm>[...]] [/deny <Sid>:<Perm>[...]] [/remove[:g|:d]] <Sid>[...]] [/t] [/c] [/l] [/q] [/setintegritylevel <Level>:<Policy>[...]]
icacls <Directory> [/substitute <SidOld> <SidNew> [...]] [/restore <ACLfile> [/c] [/l] [/q]]

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Windows comes with a special command line utility called CACLS.

You can use it as follows:
CACLS files /e /p {USERNAME}:{PERMISSION}

Where,

• /p : Set new permission
• /e : Edit permission and kept old permission as it is i.e. edit ACL instead of replacing it.
• {USERNAME} : Name of user
• {PERMISSION} : Permission can be:
• R - Read
• W - Write
• C - Change (write)
• F - Full control

For example grant Rocky Full (F) control with following command (type at Windows command prompt):

C:> CACLS files /e /p rocky:f

Read complete help by typing following command:

C:> cacls /?

http://www.vistax64.com/vista-security/112670-changing-folder-permissions-recursively.html

http://www.cyberciti.biz/tips/windows-change-access-permissions-from-the-command-line.html