Module ip_tables not found

Hello

I am running Ubuntu 8.10 64bit on a 540 linode but am running into problems trying to get iptables working. I installed IP tables using

apt-get install iptables

I then goto use iptables-restore but get this error message

root@li38-42:/etc# iptables-restore /etc/iptables.test.rules                                        
FATAL: Module ip_tables not found.                                                                  
'ptables-restore v1.4.0: iptables-restore: unable to initialize table 'filter                       

Error occurred at line: 1                                                                           
Try `iptables-restore -h' or 'iptables-restore --help' for more information.     

It seems that the ip_tables module is not loaded into the kernel but what the googleing I have done has reported.

Any ideas how to fix this? My IP tables config is:-

*filter                                                                                             

#  Allows all loopback (lo0) traffic and drop all traffic to 127/8 that doesn't  use lo0                                                                                             
-A INPUT -i lo -j ACCEPT                                                                            
-A INPUT -i ! lo -d 127.0.0.0/8 -j REJECT                                                           

#  Accepts all established inbound connections                                                      
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT                                             

#  Allows all outbound traffic                                                                      
#  You can modify this to only allow certain traffic                                                
-A OUTPUT -j ACCEPT                                                                                 

# Allows HTTP and HTTPS connections from anywhere (the normal ports for websites)                                                                                                   
-A INPUT -p tcp --dport 80 -j ACCEPT                                                                
-A INPUT -p tcp --dport 443 -j ACCEPT                                                               

#  Allows SSH connections                                                                           
#                                                                                                   
# THE -dport NUMBER IS THE SAME ONE YOU SET UP IN THE SSHD_CONFIG FILE                      
#                                                                                                   
-A INPUT -p tcp -m state --state NEW --dport 22 -j ACCEPT                                           

# Allow ping                                                                                        
-A INPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT                                                    

# log iptables denied calls                                                                         
-A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7                                                                                               

# Reject all other inbound - default deny unless explicitly allowed policy                          
-A INPUT -j REJECT                                                                                  
-A FORWARD -j REJECT                                                                                

COMMIT