Vista - Vista Firewall issue with 2 active Networks

I have 2 NICS:

Network 1) accesses the LAN and the internet thru a gateway.
Network 2) accesses a private WAN thru a layer 5 switch

For Vista Firewall:
Network #1 has been setup as a Private Network Profile
Network #2 has also been setup as a Private Network Profile.

However, Network #2 will revert back to a Public Profile on every reboot.
The Public Profile will then "rule" both Network connections and as one would
expect connectivity thru both networks results in chaos.

How can I force Network #2 to remain within the Private Profile and stop
converting to Public on every reboot? Network #2 does not have a gateway (
its left blank in TCP/IP as there is no DNS or network resources served by a
gateway).

My suspicion is that since Network #2 has no gateway defined, the Windows
Network awareness API keeps converting it to a Public Profile.

Can Microsoft assist with this Vista Firewall issue?

Thank you for any assistance.