>Hi, Ed!
>
>I've installed 'NWLink IPX/SPX Compatible Transport' and it's properties say: 'Frame Type: Autodetect'
>

You may be getting bitten by a frame type error; 3.11 used 802.3 frames as a default, so you might try that instead, especially if it turns out that some of your Win9x systems are trying to use NETBIOS over IPX to do peer-to-peer communications.

>TIA,
>Uri.