No communication on Bridged ethernet (almost)

I say almost because the guest can ping the host and the host can ping the guest, but there is no other communication.  The guest OS will not pick up an address with the network's DHCP server. 

I've tried messing around with the adapter settings and changing the speed/duplex settings.  Nothing seems to work to get it communicating.

If I switch it to NAT, I am able to browse the internet but I cannot communicate with the internal LAN.

I am running 1.0.4 and Windows 2k3 server service pack 1

Any suggestions would be appreciated

-Rich