>can anyone help me?
>
>im using win2k professional and i need to bind its network card with 2 IP addresses, one is local network and the other is a live IP address. i tried adding the local ip address after configuring the live IP address first, then added the pc to the workgroup but i can't see the pc as a member of the workgroup. i want the pc to a member of our workgroup but at the same time have a live IP address. i have tried pinging other local IP address from that workstation and it can ping the other IPs. however i cannot see the PC in the workgroup
>
>pls. if anyone knows how to do this. it would be an immense help!

This can be done if you do not use DHCP to assign IP addresses to the machine, and your Router supports DMZ. I use this to create gateway servers for NetMeeting on routers with firewalls that otherwise block NetMeeting traffic. Do the following:

Create a Local Area Connection, with the TCP/IP protocol with a static IP address to be seen outside the local LAN first. You must specify information regarding the IP address, subnet mask, gateway, DNS connection, WINS resolution and the like. Save this connection. Open the Local Arrea Connection you've created, open the Properties, and select TCP/IP. At the top of the dialog box, the TCP/IP addresses are shown. Press the Add button, and fill in the information on the 2nd IP address to be public to the workgroup and it's subnet mask, and assign it a metric of 2. Save this.

On your router, place the public IP address in the DMZ of the router, so that the router does not try to filter or reroute packets to that IP address. If the router supports IP Filtering, I'd block the local LAN from accessing the public IP address except for specific ports needed for specific purposes.

Both IP addresses must share the same gateway, DNS resolution and WINS resolution. Since you most likely will be blocking local traffic to the public IP address, you may encounter problems using DNS to resolve WINS, and may need to establish a WINS server within you domain to handle NetBIOS address resolution. Realize that being in a DMZ, any firewall features of your router are bypassed for the exposed IP address.

There are other approaches to exposing an IP address outside the local subnet, useful for routing between subnets sharing a single segment, but they're considerably more complex to set up. I've never used this in a Workgroup setting, only in a domain which is located behind a firewall with a router, or to allow specific VPN activity for Terminal server using a single NIC.