Configure my Juniper Netscreen FIrewaal with 2 CentOS SRVRs

Juniper Firewall NS-50 with ScreenOS 5.x should be configured to NAT a public IP to private IP. The Private IP is the heartbeat ip between two servers. When the servers send packet to internet they should have the same public ip mentioned earlier. Between the firewall and servers i have a cisco catalyst 3550-12T switch. The NICs on the servers are bonded to bond0. Heartbeat is configured and running. all you have to do is configure the juniper,the switch for LACP, and some tuning on the linux boxes if needed