Error Message When You Try to Set an IP Address on a Network Adapter

Hi,

How do you perform the process in the following article on a Windows 2003
server?
http://support.microsoft.com/?kbid=269155

We are running Win 2003 server SP1, and I've had to replace a faulty NIC,
however when I assign the IP address of the old NIC to the new NIC, I get
the following error message:

The IP address XXX.XXX.XXX.XXX you have entered for this network adapter is
already assigned to another adapter Name of adapter. Name of adapter is
hidden from the network and Dial-up Connections folder because it is not
physically in the computer or is a legacy adapter that is not working. If
the same address is assigned to both adapters and they become active, only
one of them will use this address. This may result in incorrect system
configuration. Do you want to enter a different IP address for this adapter
in the list of IP addresses in the advanced dialog box?

I generally just click "No" and carry on, but it would be nice if I could
get rid of the message. I've tried the steps explained in the above article,
but no hidden devices are showing up in device manager.

Cheers

Ben