Can't See a Computer on the Network

[Superguy]

On a Win XP network, I cannot see the shares on a particular computer. Lets call it SMITH.


SMITH has XP sp2 and some of the firewall setting are enabled.

SMITH has a static ip and can be pinged by name and ip.

SMITH can see other shares on the network.

SMITH cannot be access on the network by running \\smith or browsing the network.

Any ideas? Any firewall setting to enable/disable?