It looks like all I need to do is replace some files to get everything working correctly, since I'm mainly in Win2K OS, but I didn't really see any discussion about license servers or Intralink servers. They are subjected to this Unix thing, too, aren't they?
What do they mean when they (PTC) say IMPORTANT: You MUST uninstall your existing Pro/ENGINEER installation before installing this new Datecode when talking about any new timeout corrected datecode like for Wildfire and Intralink 3.3?
Well, Saturday the 10th Intralink would run but any attempt to start Pro/E, either linked to a workspace or not, failed with a message about name service not available. I downloaded the file nmsd.exe and copied it to /ptc/pro2001/i486_nt/nmsd. Same result. Turns out there are two other locations for this file. In the existing install all three were different. I copied the new nmsd.exe to the other two locations and now everything works fine.
Same file in three different locations? Sleazy! And yes, this should have been taken care of during Y2K testing.