If you have a dedicated server and you need to add an additional ip address, first thing to do is request for the additional ip address from the hosting company. Often time they would not hook it with your server, they would just give it to you.

So how you add the additional ip address to your windows server?

These steps are for Windows Server 2003.

• Click on Start button
• Open Cotnrol Panel
• Open Network connections
• Select Local Area Connection (for first Ethernet card)
• Right Click and select Properties
• Select Internet Protocol (TCP/IP)
• Now click on Properties button
• Click on Advanced tab
• Now you need to add in an IP address section Enter IP details such as IP address, Subnetmask etc
• Save the changes and go back to Windows server desktop

These steps are for Windows Server 2008.

• Click on Start button
• Open Cotnrol Panel
• Click on Network and Sharing Center
• Click on Manage Network Connections
• Right Click on the active network icon  and select Properties
• Select Internet Protocol Version (TCP/IP). There may be more then version. For me there are 4 and 6. Mine one is at 4.
• Now click on Properties button
• Click on Advanced tab
• Now you need to add in an IP address section Enter IP details such as IP address, Subnetmask etc
• Save the changes and go back to Windows server desktop

After that you need to verifty that new settings are working. This is how you do that:

• Open command prompt
• Click on Start button
• Select Run
• Type cmd and press enter
• Type the following command at DOS prompt: ipconfig /all