Bert,
Some of the stuff that is second nature to you is not so obvious to some of us!
Gene
It is almost impossible to break a workgroup. Domains yes, as you are interacting with Active Directory, using DNS, DHCP, Group policy, Internet Information Services and much more. Not trying to brag about domains, but it is very easy to break DNS or IIS.
Gene, don't you love it when he is kind enough to prove your point?
(Not to completely contradict Sandeep's and my statements about how easy client/server is.
But I think you just did!