In my listener on my local box I have this listed

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = D:\oracle\ora92)
(PROGRAM = extproc)
)
(SID_DESC =
(GLOBAL_DBNAME = Smokey)
(ORACLE_HOME = D:\oracle\ora92)
(SID_NAME = Smokey)
)

I named the database instance Smokey, is there anything more in your listener file?