samba and Iptables

Hey,

Im currently working on a new Debian router/gateway with iptables.

Here's my setup

WAN
|
eth0
|
Router/samba server 192.168.0.1
|
eth1
|
Clients 192.168.0.100 - 192.168.0.200


In my iptables script i use:

iptables -P INPUT DROP
iptables -P OUTPUT DROP
iptables -P FORWARD DROP

After i modified INPUT ACCEPT -> INPUT DROP it has been impossible for my clients to access Samba folders on the server.

Can anyone point a direction - or even better - tell me what to do