DNS designation

I just installed a Win2K server and encountered some login problems. The server was configured with our ISP’s DNS servers but, to speed up the login I configured the workstations to use the local server as the DNS (cut login time from 2-3 minutes to ~ 5 seconds).

This is great for desktops but what about people with laptops? So you configure this as an “alternate” configuration?

I’m open to suggestions.