You guys are really saving me a lot of time and aggravation and I thank you.

Ideally, here's what I need to do once I have identified the worstation:
If, for example, the IP address is in the range 169.112.1.40-169.112.1.100, set the default gateway to 169.112.1.2 and the subnet mask to 255.255.248.0
There are different scenarios like this example.