Your troubles with nbtstat is most probably the same troubles you're having with IP tools. In IP tools you'll get a 'command timed out' error, and in nbtstat you get a 'host not found'. All that means is that when you sent the request for information, the remote computer did not respond. I gave you four possible reasons this may happen in the other post.
As for scope ID. If it was set to something other than blank, then you'd have reason to worry. Scope ID is a means of having a group of computers only communicate with each other. If 2 computers have different scope's, then they are invisible to each other. It is not set in nbtstat, but rather your TCP/IP configuration settings.