firewall config to allow traffic from/to a VirtualBox bridge

[jjsg82]

Hi !
I am trying Innotek VirtualBox and I setup the network 
<http://www.linuxquestions.org/questions/#>in bridge mode.
The network for the guest system works only if I disable the host 
iptables (service iptables stop).
So, the question is How to setup iptables to allow traffic to/from this 
bridge ?
I am using the default firewall configuration provided by 
system-config-firewall.
Don't know how to create a rule to allow all traffic from/to this brigde.
Thanks to all.

-- 
Juan Sierra
jjsg82 at gmail.com
Fedora 9