Thanks for the idea.  I did try the other URLs with the same result.  

I figured it out however.  I didn't have a hosts file.  A simple entry of

localhost        127.0.0.1

solved the problem.  I guess that in lieu of the hosts file it was guessing my host based on DHCP settings.  That's what lead it to Comcast's servers.  What is interesting is that none of the other web servers that I've run on my machine (Apache, IIS) had this problem.  In any event, problem solved.

Thanks for responding.

Stan Shore