Windows (or other OS) network configuration

Hello all,
I've been asked to develop a Java software that should be able to modify network configuration (IP, mask, ...) of a PC. Is this possible? I don't think so, but, please help me!!
Thank you so much

I have to use Windows, now, but this process could be repeated on Mac or Linux, Solaris, ... not sure yet. But Windows is surely mandatory.
The software I need to develop has to do this things:
- read computer network configuration (IP, mask, gateway, DHCP, ... all the things in IP network connection of Windows);
- save this configuration (let me call it "office configuration") somewhere;
- change the active configuration to apply a "local" or "direct" configuration that will be used to directly connect (with a cross cable) the pc to a network device (Digital Microwave Radio Links Low/Medium Capacity, for Short-Haul PDH Networks I'm working on). Something like IP=10.0.1.x, mask=255.255.255.0 or so and so on for local direct connection;
- do the things on this device (software exists);
- restore office configuration at the end of the software.
Is this possible? Thank you very much.

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