Microsoft Windows XP [Version 5.1.2600] (C) Copyright 1986-2001 Microsoft Corp. C:\WINDOWS>netsh interface ip delete dns ?
Usage: delete dns [name=][[addr=]|ALL ]
name - The name of the interface where DNS servers are deleted.
addr - One of the following values:: A specific IP address of a DNS server
you are deleting.
ALL: Deletes all configured IP addresses for DNS. servers.
Remarks: Deletes statically configured DNS server IP addresses for a
delete dns "Local Area Connection" 10.0.0.1
delete dns "Local Area Connection" all