dotnet remoting: All

I'm trying to get this to work but I'm having problems. I have added
reference to a COM+ dll to get the class (type) I need. Now this is
hosted on a remote server (SP3DSMP1) as a COM+ component.

So I tried this from a client...

Type comType = Type.GetTypeFromProgID("NTNameService.UpdateNumber",
'SP3DSMP1_Name', true);
UpdateNumberClass oUp = Activator.CreateInstance(comType);

But this fails with the error:

Retrieving the COM class factory for remote component with CLSID
{975045DE-9237-4F30-9458-2830C41377DA} from machine SP3DSMP1 failed
due to the following error: 80110823.

Any ideas what I'm doing wrong here...??

thanks