We provide T1 access to customers in our building, and one of our clients is requesting 3-5 static IPs. Our traffic is routed through a server running Linux Slackware (used as a firewall). There are 6 NIC cards installed on this server, 3 of which can be used to assign static IPs (there is a direct cat5 line from the card to the client). What do I need to do to configure one of these cards to provide a static IP? I know that it is eth4 that will be used, but I can't figure out how to access the configuration files and make changes, nor do I know what other steps are necessary (restarting services, etc.). Any help is appreciated.