Help w/ multiple interfaces + AD DNS

If anyone has run into this before, I'd appreciate any advice/comments. :) The issue that we're having is that our Mac users can't connect to each other. The Macs are all Mac Pros running 10.5.5 + VMWare Fusion 2.0 VMWare Fusion adds two virtual interfaces [vmnet1, vmnet8] to each Mac. Each of these virtual interfaces has a non-routable IP address (172.16.x.x and 192.168.x.x). When the Macs boot up, they're registering en0 + the two vmnet interfaces with our Active Directory DNS. So ... when you try to resolve a Macs DNS name, you're more likely to get a vmnet IP address back (that can't be used to communicate between the Macs), not the en0 IP address that we need. I've tried the suggestion listed in the 'Mac OS X 10.5 Server: Preventing DDNS registration for multiple interfaces' article (which is to modify /etc/smb.conf), but it's not working. When I delete the Macs DNS entries from the DNS servers and reboot the Mac I'm testing with, all three interfaces get re-registered. http://support.apple.com/kb/HT3169 I'm stumped. If anyone has any advice/suggestions, I'd really appreciate it! Thanks! Jason