private ip and public ip, 3com router

Hi, sorry for my english.
We have a 3com 3013 router, 128 public ip, 3 lan pc.
Here is the configuration of my router.
I've assigned a private ip (192.168.0.x) to each pc, defining the
router as the default gateway but i can't surf the web or ping anywhere
outside the lan.
Any suggestion? Should i NAT? How?
Thank you very much.
Marco

!
interface Ethernet0
ip address 192.168.0.1 255.255.255.128
!
!
interface Serial0
clock DTECLK3
link-protocol fr
description CVP HDSL 2mB/s
ip address 151.x.x.x 255.255.255.128 // 151.x.x.x è un ip
pubblico assegnatoci
fr lmi type ansi
!
interface Serial0.1 Point-to-Point
ip address "ip rete wind" 255.255.255.192
fr dlci zzz
quit
!
ip route-static 0.0.0.0 0.0.0.0 "gateway di wind"

If you are going from an private IP on the inside and public you need to do
NAT
"Fondazione Distrofici Onlus" <(E-Mail Removed)> skrev i melding
news:(E-Mail Removed) oups.com...
Hi, sorry for my english.
We have a 3com 3013 router, 128 public ip, 3 lan pc.
Here is the configuration of my router.
I've assigned a private ip (192.168.0.x) to each pc, defining the
router as the default gateway but i can't surf the web or ping anywhere
outside the lan.
Any suggestion? Should i NAT? How?
Thank you very much.
Marco

!
interface Ethernet0
ip address 192.168.0.1 255.255.255.128
!
!
interface Serial0
clock DTECLK3
link-protocol fr
description CVP HDSL 2mB/s
ip address 151.x.x.x 255.255.255.128 // 151.x.x.x è un ip
pubblico assegnatoci
fr lmi type ansi
!
interface Serial0.1 Point-to-Point
ip address "ip rete wind" 255.255.255.192
fr dlci zzz
quit
!
ip route-static 0.0.0.0 0.0.0.0 "gateway di wind"