Microsoft Windows XP [Version 5.1.2600] (C) Copyright 1986-2001 Microsoft Corp. C:\WINDOWS>netsh interface set credentials ?
Usage: set credentials [name=][user=][[domain=]string
[password=]string]
Parameters:
Tag Value
name - Name of the interface to be added.
user - Name of the user account.
domain - Domain of the user account.
password - Password of the user account.
Remarks: Sets the credentials used to connect an interface.
Examples:
set credentials name="Demand-Dial Interface" user=guest
set credentials name="Demand-Dial Interface" user=admin
domain=mydomain password=mypassword