Well, this baffled me for most of yesterday evening.

I have a network at home. I had two 98SE machines and an XP Home machine talking to each other fine. I have had (but never more than 5 at once) an Me machine and a 95 machine also on the network, no probs.

The network is hard-wired (not wireless) but two machines (and it is the two puzzlers) are on "homeplug" connections that run network through your mains wiring.

A friend gave me an old Dell with XP Pro on it. The network card is a base 10 card not a 10/100 card. It's a PIII 500! I didn't know XP would run on something that slow.

Let's give names to the computers.

The 95 machine is "Dominic" (a P233)
The Me one "Rachel" (a PIII 933)
The two 98s are "Royston" (Athlon 2000) and "Richard" (Athlon 2400)
The previous XP one is "Jeff" (Celeron 2600)
The new (old) one is Sadj (PIII 500)

Both Dominic and Rachel are in pieces. I hope to put htem back together later today.

Royston Richard and Jeff can all use the internet, via my router.
Sadj can't - even with the firewall off.
No computer shows all 4 on the network. All show only 3.

Jeff can see Jeff Richard and Royston.
Sadj can see Sadj Richard and Royston.
Right now Royston can see Sadj Richard and Royston but sometimes it sees Jeff Richard and Royston in stead
Right now Richard can see Jeff Richard and Royston but sometimes it sees Sadj Richard and Royston in stead.

Ideas?

The "Home networking wizard" seems to be no use, not least because most of the machines are refusing to read floppies written in the others!