Restore network settings after upgrade

Upgrading to version 4 sets up a new networking adapter in your VM, and the upgrade process DOES NOT transfer any customized settings from your old VM's adapter.

So you must re-enter any customized settings. For example, on a Windows 2000 VM I had to re-enter WINS and DNS servers. I also reloaded the LMHOSTS file (and restarted Windows so the new LMHOSTS would take effect), although I doubt that was necessary.

The symptom I had before I did this was that I couldn't get to shares on other (local or remote) Windows computers.