How do I configure DHCP scope options in Windows 2000?

Start the DHCP MMC snap-in (Start - Programs - Administrative Tools - DHCP)

Expand the server

Expand the scope whose options you wish to modify

Select the 'Scope Options' branch and in the right hand window you will see the currently configured options.

Right click on 'Scope Options' and select 'Configure Options'

Select the Basic tab and you can configure other options by checking its box and entering the details. For example a Time Server, check '004 Time Server', enter an IP address and click Add.
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Click Apply. Click OK