The PCs can’t see in the Neighborhood

Hi, I have a little network of Windows XP Pro SP1 PCs (3Desktops and 2 laptops just recent reformated and clean reinstalled). One of the PC have a 2 NICs, one for ADSL access and the 2nd configured as 192.168.0.1 for the network ADSL share. The ADSL service still is not installed, but anyway the others 2 PCs and laptops should see each others in the neighborhood, if each NIC of they is configured as 192.168.0.2; 3; 4…etc and using the 192.168.0.1 as gateway, Yes?. But I can’t make the PC see each others and all the NICs and cables and Switch look like are working fine. Any ideas? Thanks!!