Hello:
I'm using JDownloader on W7. My internet connection is by menas of a coaxial cable connected directly to a Scientific Atlanta modem and from this to my machines by a network cable. The service is provided by my cable company.
I was using the following commands inside a batch file as an externar reconnector:

Where "local" is the name of the network connection in windows.

This commands were working perfectly on Windos XP but, although the script runs fine, showing no error messages on W7, the ip adress remains the same.

I have read it is possible to change de MAC adress of the network device but with this method it is necessary to turn the modem off and back on, which is unpractical and totally against the spirit of automatization.

Believe me, I have tried different variations of the latter sequence, including netsh commands with no better results. All that is left is to get into studying tcp/ip or hope some of you can help... please?