You have installed a network card in your NT4 system, loaded the network-drivers , but on starting up NT4, the following message is displayed:
Also, it will be impossible to share drivers and printers, because the "Share Selection" will not be available in the Context menu (Right-mouse click)
In such cases, ALWAYS have a look to the "Event Viewer" (part of the Administrative Tools):
Double-Click on the "blue" line to get a detailed error-description:
If you get this message, verify whether you have the "NT4 Service Pack 3" installed by calling up "NT Diagnostics" (Administrative Tools):
You have the "NT4 Service Pack 3" install, you installed the Network, but you DID NOT re-install the Service Pack !
Remember: when you installed the Service pack 3, what it told you as LAST message:
Solution: Re-install the Service Pack 3