Apple Remote Desktop has a nice feature called "Unix" that allows you to send commands to Macs that allow you to change a multitude of settings.
With the help of the command "networksetup", it's possible to change network settings of many workstations at once. This can come in handy if you need to change search paths, DNS servers, types of IP address allocation, and numerous other properties.
For example, in order to change the search path, you could use:
'networksetup -setsearchdomains "Built-in Ethernet" search.domain1.com'
For Mac Pros and G5s, you may need to use "Built-in Ethernet 1" to address the service as they have multiple ethernet ports.
For more info, please checkout the Apple
Networksetup Man Page.