samba - Mar 2007 - Is anything special needed for connecting two linux computers?

Hello, I would like to use Samba for sharing files between two linux  
computers (both Ubuntu 6.10). I want samba, not NFS, since occasionally  
some windows computers connect to the network as well.
Is there anything special that needs to be done in addition for normal  
setup used for windows<>linux configuration?
I use the same smb.conf file on both machines:

When I run smbtree, both computers list only their shares.  
smb://ip_address_of_the_computer works locally, but not for the other  
computer (over network) .The two computers are on the same subnet and can  
ping each other. I think I am missing somthing basic here, but I have been  
strugling with it for several days now without any advance, so thanks for  
any advice.
[global]
    workgroup = UBAKA
    server string = bill
    security = share
    netbios name = bill1
    socket options = TCP_NODELAY
    hosts allow = 0.0.0.0/0

and different shares definitions:

1
[Osobni]
path = /home/tom/Osobni
available = yes
browsable = yes
public = yes
writable = no


[Hudba]
path = /home/tom/Hudba
available = yes
public = yes
writable = no
browsable = yes


[new]
path = /home/tom/Desktop/new
available = yes
browsable = yes
public = yes
writable = yes
force user = tom


2
[Desktop]
path = /home/frenkac/Desktop
available = yes
browsable = yes
public = yes
writable = no
guest ok = yes

Tom?? Hnyk wrote:
> I use the same smb.conf file on both machines:
> 
To start, you'll need to give each machine it's own netbios name.