Hi, I have a question. I am currently working on a project to configure two ISA 2000 servers in Windows 2003 w/ Load Balancing and Fault Tolerance. Each servers have two NICs. ISA1 NIC1 (LAN): 10.100.1.1/24 NIC2 (WAN for DSL): DHCP ISA2 NIC1 (LAN): 10.100.2.1/24 NIC2 (WAN for DSL): DHCP I was successfully using 10.100.1.1 in ISA1 for the NLB interface and create Virtual IP 10.100.1.10. When I tried to make to 10.100.2.1 to become the NLB interface, it said "NLB not bound". Why? I was using unicast mode and define the port rule as mutiple host - single. I tried to search in isaserver.org and microsoft about how to setup a NLB in different LAN segment, but no luck. Why it doesn't work?? Is it possible that I can make the windows OS load balancing under different network segment? Would you please lead me in the right direction? Please advice, Thanks alot Ricky