Can MS server DNS send queries out to different routers?

I have two firewalls on my network. One for most everyone and one for network administration. I am using openDNS to do content management. For openDNS to work differently for each group, the queries need to come from different ips. As is, all DNS queries that are forwarded by Server 2003 DNS go out to the default gateway for the server which is the "everyone" firewall. So no matter where the admin data is routed (through the admin firewall) the DNS queries are still coming from the everyone firewall and the blocking effects the admins as well. Is there a way to have server 2003 send the queries that come from certain machines out to the other firewall?