My configuration is really not complicate:
mining_proxy.exe --host stratum.bitcoin.cz --port 3333 --getwork-port 8332 --stratum-port 3333
Batch file looks fine. Can you take a screen shot of your Cube config page? Also a screenshot of "ipconfig" would be helpful, but if you don't want to include that, please run it (command prompt -> "cd\windows\system32\" enter then "ipconfig") and tell us what the IP address, subnet mask, and gateway IP is...