Configuration des cartes reseaux

Bonjour,

En faite j ai deux carte reseau avec deux reseau differant (donc deux passerelle differante) ,
Je n'arrive pas a les configurer ( impossible de pinger )
deplus je n arrive pas à ecrire dans le fichier rc.conf

donc voici ce que j'ai dans mon fichier rc.conf :

background_dhclient="YES"
compat5x_enable="YES"
sshd_enable="YES"
usbd_enable="YES"
moused_type="auto"
moused_enable="YES"
devd_enable="YES"
devfs_system_ruleset="devfsrules_common"
sendmail_enable="NO"
sendmail_rebuild_aliases="YES"

# Enable the pcbsd startup / shutdown scripts
pcbsdinit_enable="YES"

#Enable samba server
samba_enable="YES"

# Disable LPD
lpd_enable="NO"

# Enable CUPS
cupsd_enable="YES"
enable_linux="YES"

# FSCK Enhancements
fsck_y_enable="YES"
background_fsck="NO"

# tmpmfs Flags
tmpmfs="YES"
tmpsize="800m"
tmpmfs_flags="-S"

# Denyhosts Startup
denyhosts_enable="YES"

# powerd: adaptive speed while on AC power, adaptive while on battery power
powerd_enable="YES"
powerd_flags="-a adaptive -b adaptive" # set CPU frequency

# enable HALd
dbus_enable="YES"
polkitd_enable="YES"
hald_enable="YES"

# Enables support for HPLIP
hpiod_enable="NO"
hpssd_enable="NO"

# ntpdate is deprecated and will eventually be removed from the distribution since
# the same functionality is available in ntpd(8).
# Without "ntpd_sync_on_start" option, ntpd refuses to perform an
# initial correction if the clock offset is too large.
#
ntpd_enable="YES"
ntpd_sync_on_start="YES"

# Enable the firewall
pf_rules="/etc/pf.conf"
pf_enable="NO"
pf_flags=""

snddetect_enable="YES"
mixer_enable="YES"
bsdstats_enable="YES"
keymap="fr.iso"
hostname="surveillance"
ifconfig_bge0="inet 10.9.255.101 netmask 255.255.255.0"
defaultrouter="10.4.61.250"
ppp_enable="YES"
ppp_mode="background"
ppp_nat="NO"
ppp_profile=""
ifconfig_fxp0="inet 10.4.61.91 netmask 255.255.255.0"

Merci