>I had been using FB 1.5 with Windows 98 and 2000 without a single
> problem, but the customer changed their machines and the new ones have
> Windows XP.
> The clients connect perfectly to the old servers, but when a use
> Windows XP as a server, no one can connect.
>
> Does any one know something about it?
>
> Thanks a lot

The default windows firewall is probably turned on.
You can turn it off under the Advanced tab of the Local Area Connection in
Control Panel -> Network Connections

HTH
Gary