How to solve "TNS-12560 TNS-00530"?

Question

when i try to start listener service of ORACLE (10g) transparent gateway on Windows 7,it returns two errors:

Failed to start service, error 2.
TNS-12560: TNS: protocol adapter error
TNS-00530: protocol adapter error

and my configuration files below:

listener.ora
SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = D:\oracle\product\10.2.0\tg_1)
      (PROGRAM = extproc)
    )
    (SID_DESC =
      (SID_NAME = tg4msql_kssc)
      (ORACLE_HOME = D:\oracle\product\10.2.0\tg_1)
      (PROGRAM = tg4msql)
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = computer101)(PORT = 1525))
    )
  )

Could you please help me with the problem?Thanks!