Sounds like Win2k won't give you those IP/config for your new card because it sees them as in use by the old NICs.
I would check these article out to see if they will help.
Not quite sure which will resemble your registry entry (been a while since I looked at win2k) but it is basically WinXP under the hood.
https://support.microsoft.com/en-us/kb/146333
https://support.microsoft.com/en-us/kb/147797
http://www.extropy.com/forums/knowle...twork-adapters
https://community.spiceworks.com/how...apter-settings
http://windowsitpro.com/windows-serv...e-nic-registry
But honestly I wouldn't want Win2k on the internet due to vulnerabilities.
If your post count is higher than your round count, you are a troll.