dual active networks for 64bit ??

Hi All,
I'm running Vista 64 business on a Compaq 6710b, up to two weeks ago I connected my computer to my company network via the docking station and a 100mbit wired connection firewalled with limited Internet access. Additionally I connected to a wireless network via WiFi where Internet was not limited and by switching proxy I had both company and open network !!

All was well until I experienced the Blue Screen of Death and I had to restore the system. After the restore the dual network scheme doesn't work !!!

Apparently at some point something was set in the network configuration that made the dual network possible, but what ???

Any ideas or tips ???