Windows Server 2008 Slow network connectivity to Windows Server 2003
So it would seem that Bonez had the answer in a manner of speaking. I didn't have to do anything with packet tagging, but I did install QoS on my Windows Server 2003 box and now the Windows Server 2008 box is able to browse network resources on the 2003 box lickity split. I did not have to run the netsh commands. I am betting that I could reverse those commands on my vista boxes and still be able to access the 03 box...
Thanks so much John and Bonez.
To be clear: The solution was to make sure that QoS was installed on the 2003 box.