Windows XP to RH9 can't browse network

Hi,

i just tried to setup roadwarrior (windows xp) to rh9 server cipe 
connection.

roadwarrior--------------------dial up connect over ppp---------cipe 
interface win xp-------tunneling---firewall-----cipcb0 rh 9 
server---------ext nic rh9------------int nic rh9
  
ip 192.168.10.190-------------pppoe 211.x.x.x :10002-------------cipe ip 
192.168.20.140-----internet-----iptables-----192.168.20.40--------------62.x.x.x:10001------192.168.10.40
netmask 255.255.255.0-----netmask 255.255.255.255---------netmask 
255.255.255.0----internet-----iptables-----255.255.255.0--------------255.255.255.248---255.255.255.0

at the lan on the right side (192.168.10.0) there is a nt pdc with wins, a 
samba server with shares i want to browse.
at the roadwarrior in the config of cipe nic i put the wins server in with 
ip.

at the rowadwarrior i set "route add 192.168.10.0 mask 255.255.255.0 
192.168.20.40".
at the rh server there is one route "192.168.20.140  0.0.0.0 
255.255.255.255 UH    0      0        0 cipcb0" coming up when starting 
cipe daemon (service). 

when i bring up the cipe tunnel i can ping the whole lan 192.168.10.0 by 
ip and by netbios name, that works great.

but i can't browse doing start->run->\\name or \\192.168.10.X to get the 
shares in the lan.

i could get the roadwarrior to my domain with networking assistant of xp, 
that worked also.

rather that i cannot browse the network, not one machine i can see.

can someone give me a tip what i am missing right now?
do i need to built another route or are there some iptables rules which i 
need.
i have the same problem when iptables is down and everything is open.

regards, wolf