Does anyone know of how to get a 6.5 Server to recognise a 2K instance publisher..\\host\instance

RPCing between 2K instance and 6.5 is easily accomplished by either a Server Alias and or sp_setnetname procedure..but since 2K publisher is iding itself as \\host\instance, the push subscription to 6.5 fails as 6.5 Server says \\host\instance not defined as a publisher..

Any bright ideas..

Cheers in advance..