There are no relative differences between Windows NT and Win2k. My bet is that you have done something to your CServiceModule::RegisterServer which is not properly registering the service. Use the Platform SDK's WinDiff file differencing program to compare your code against the dummy AppWizard generated code. Also, with Win2k, you need to refresh the services display manually in whatever Management Console you are using to view the services list. Press F5 or right click and select Refresh to get the list updated.
This was first published in June 2001