Error message when you try to set an IP address on a network adapter

Recently I have done some P2V and V2V migrations with the guests being windows 2003 and above and I get an error message when I go to IP the new nic's about there being a "hidden" nic with the same IP address.  I followed this KB and it did work.  In short here are the steps that I did:

Method 1

1. Click Start, click Run, type cmd.exe, and then press ENTER.
2. Type set devmgr_show_nonpresent_devices=1, and then press ENTER.
3. Type Start DEVMGMT.MSC, and then press ENTER.
4. Click View, and then click Show Hidden Devices.
5. Expand the Network Adapters tree.
6. Right-click the dimmed network adapter, and then click Uninstall.