The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.
One of a set of tools we're offering as a way of saying thank you for being a part of the community.
You could change it in the registry and use something like reg.exe to distribute it.http://www.winxpcentral.com/registry/tweaks.php (near the bottom of the page)
Obviously make sure all monitors can cope with the refresh you are going to change it too.