I have 25 Ubuntu Desktop 8.04LTS machine clean install. I cant able to ping ubuntu system from my windows desktop, and also i cannot able to ping windows desktop from Ubuntu system (I can able to ping through IP). We are in WORKGROUP no servers

The all the desktop (windows & ubuntu) machine is getting an IP via DHCP, my firewall is acting as a DHCP server, They are on the same subnet.

but I'm not able to get a clear answer. What do I have to do to be able to ping my Ubuntu machine, via its hostname in Windows? and vice versa.

Gobinath Sundaraveivelu