Windows 98SE Network Problem

I have a client with 9 Windows 98SE machines. One of these acts as a server to run Outlook and file storage. This is also the machine that gives access to Telewest Broadband.

All the machines use DHCP.

I have one machine that cannot access the server through network neighborhood giving the following message: \\server is not accessible.

The odd thing is that this machine can access the shared files/printers of all the other machines and the internet connection on the network!

The 'Server' machine has no specific passwords or user accounts as it is W98SE.

I have changed network cards more than once and deleted/re-installed TCP/IP and NetBEUI etc with no effect.

Can anyone help?

Thanks in advance.

PS I have just tried to run TRACERT on the server and it times out. I can also not PING it. If I TRACERT any of the other machines the trace completes immediately.
Any advice on what causes this?

I have found the problem!!!!!!

Zonealarm was blocking access to this machine. How it has done this I do not know.

I have had to add this particular PC's IP address to the trusted zones.

I also had a little play by installing zonealarm on one of the other machines. All are able to connect directly but again not this particular one.

Very odd but at least I know.

cool.. i am glad you are back up..:)