samba - Aug 2002 - linux and w2k laptops on a switch - how to get this working?

Hello.

I have two laptops, one running w2k and the other linux (RH7.3), and I
would like to be able to mount a linux directory on the windows
machine.  Both laptops are used a variety of different networks and
neither has a static IP.  I bought a 5 port switch and configured
samba.  However, the w2k machine cannot seem to see the linux
machine.  Both machine's firewalls are down, and in smb.conf I have
the workgroup set correctly and also set

   hosts allow = 192.168.1. 192.168.2. 127. 192.

I did not change the shares other than to set a directly for a public
share:

[public]
   comment = Public Stuff
   path = /home/sharing
   public = yes
   writable = yes
   printable = no

Anyway, I cannot seem to get this to work.  BTW, I tested the cables
and switch using an additional w2k machine; this machine and my w2k
laptop were able to share files easily.

Is there anything special I have to do since both of my machines get
dynamic IPs?

thanks, michael