>>>Is it a way to change the current IP Addresses of the local computer, the Gateway and the DNS?
>>
>>Just go in Controls Panel, then Network and proceed with the TCPIP configuration.
>
>Sorry for not making my point clear. I would like to change the IP addresses thru a VB apps. My users needs more than one set of these addresses. I try to write a tool for them for switching back and forth.

I don't know if the TCPIP protocol would allow someone to do that. Normally, the IP is fixed or given virtually once the TCPIP stack is loaded.