Programmatically change IP addresses of devices connected on a network

Hello All,
I need to programmatically change the IP address of devices (like traffic monitoring cameras) on a network. Old and new IP addresses are given. Can you please pass on a few guide lines on how I can get this done?

To get this done manually, I can login to the camera using the old IP address and change the IP to new using the web UI that comes up. There are lots of cameras and doing this manually for every camera is very time consuming, hence the program approach.

I am very new to C#. Any help is highly appreciated in writing this application.

M