We are running a Gigabit Nic which is nic #2 on the intel server board as the LAN interface bound to the Active directory(AD). When enabling nic #1 you get an IP conflict immediately and the whole network dies. We tried disabling this Nic and installing a seperate network card, but the moment we do this the AD is no longer bound to our gigabit card and we can't re-install ISA. Is there any way around this? Our ISA appears to be working fine through a single NIC as we already have another firewall seperating our public and private networks. We just receive an error in the event log moaning about us just having one NIC. If it is OK for us to leave it on a single nic, is there a way for us to seperate our exchange requests from the browsing ones within ISA? The reason for this is the client has applied for ADSL for browsing and wants to keep their Diginet Line for mail. We want to continue using the ISA web-proxy and not go the direct Gateway route for the ADSL as we have just installed GFI download security to help control browsing abuse. Could you please help? Thanks