Maybe he'd get better results posting to a Microsoft Windows list?
Yeah, ... maybe. But this list needs the traffic. (-: And I know that you read this list. And eventually, this problem will have to be solved by me. Advice and hints can come from anywhere. Any question, regardless of the source must be answered carefully, and Linux or Windows, the questions are likely to be similar.
It has been my frequent experience that I solve a problem by carefully crafting a question or a response to a question. There is a certain discipline about writing.
C:\> nslookup
> set debug
> set timeout=10
> nasx.tclc.org
> nas0.tclc.org
This produces a fair amount of text, and I need to review it before I can comment.
c:\> dnscmd ‹server› ∕ZoneInfo ‹zone›
c:\> dnscmd ‹server› ∕ZonePrint ‹zone›
c:\> ipconfig ∕displaydns
Also lots of text that I have not yet reviewed.
c:\> ipconfig ∕flushdns
c:\> net stop dnscache
c:\> net start dnscache
None of these has any effect on the problem.
If this is configuration, it is the strangest configuration problem I've ever seen -- one domain name, and only in one context -- in use on Windows.