Trouble starting TNSLSNR80 on NT4.0P3

I'm having trouble starting the listener (tnslsnr80) under NT 4.0-P3 for Personal Oracle. I've looked through all the docs and this news group but can't figure it out. Yes, I am a newbie to Oracle. Any ideas/suggestion?

Thanks

C:\ORACLE\BIN>lsnrctl80 start

LSNRCTL80 for 32-bit Windows: Version 8.0.3.0.0 - Production on 27-FEB-99 19:04:
06

(c) Copyright 1997 Oracle Corporation. All rights reserved.

Starting tnslsnr80: please wait...

Service OracleTNSListener80 start pending. Service OracleTNSListener80 started.
TNSLSNR80 for 32-bit Windows: Version 8.0.3.0.0 - Production System parameter file is C:\ORACLE\NET80\admin\listener.ora Log messages written to C:\ORACLE\NET80\log\listener.log Listening on:
(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\oracle.worldipc))
Listening on: (ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\ORCLipc)) Listening on:
(ADDRESS=(PROTOCOL=nmp)(PIPENAME=\\HUDSONLX_LAP\pipe\ORAPIPE))
Listening on:
(ADDRESS=(PROTOCOL=tcp)(DEV=144)(HOST=127.0.0.1)(PORT=1521))
Listening on:
(ADDRESS=(PROTOCOL=tcp)(DEV=180)(HOST=209.86.63.205)(PORT=1526))
Attempted to listen on:
(DESCRIPTION=(CONNECT_TIMEOUT=10)(ADDRESS=(PROTOCOL=TCP)
(Host=127.0.0.1)(Port=1521)))

TNS-12542: TNS:address already in use
 TNS-12560: TNS:protocol adapter error
  TNS-00512: Address already in use
   32-bit Windows Error: 48: Unknown system error Received on Sat Feb 27 1999 - 21:10:31 CST