Gentlemen, I thank you both once again. After several false starts and a lot of stuffing around, the annoyances.org site that Mac posted turned out to work for me, and both computers now have internet access; I owe you both a large drink or three.
The only thing I can see I did differently was remove NetBeui from the client, so I can only assume that was the problem, but who knows, in fact who cares?
Oddly enough, now GIRLS has disappeared from DAD's radar, and trying to repeat the previous trick has no effect. But hey, I'm way ahead, and my girls think I'm wonderful for a few minutes.
Thanks again, guys.