How to connect oracle running on RH from windows client

I installed oracle on RHEL4,..everything running well till now...
And suddenly i got a problem, i can't connect from windows to my linux server....
i configured my listener to binding linux server ip host,....and service naming to same ip...
while testing connection i got error message...target host not exist....
Anyone know some similar problem and maybe can help providing solution ? thanks in advance...

This is the configuration on my Linux Server :
[oracle@cybertech admin]$ cat listener.ora
# listener.ora Network Configuration File: /home/oracle/product/10.1.0/db_1/netw
ork/admin/listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /home/oracle/product/10.1.0/db_1)
(PROGRAM = extproc)
LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = cybertech)(PORT = 1521))
[oracle@cybertech admin]$ netstat -an|grep 1521|grep tcp | grep -v grep
tcp 0 0 127.0.0.1:1521 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:1521 127.0.0.1:32776 ESTABLISHED
tcp 0 0 127.0.0.1:32776 127.0.0.1:1521 ESTABLISHED
This one was my windows client's TNSNames configuration :
# tnsnames.ora Network Configuration File: C:\oracle\BIToolsHome_1\NETWORK\ADMIN\tnsnames.ora
# Generated by Oracle configuration tools.
ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.200)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
This one was my windows client's listener configuration :
# listener.ora Network Configuration File: C:\oracle\BIToolsHome_1\NETWORK\ADMIN\listener.ora
# Generated by Oracle configuration tools.
SSL_CLIENT_AUTHENTICATION = FALSE
LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = awi)(PORT = 1521))
I tried configuring my linux server host ip to 192.168.0.200 and ping it using tnsping, then i got an error message : "no listener".
should i reconfigure /etc/hosts.conf file to add ip 192.168.0.200..? 'cause there's only one ip "127.0.0.1" in /etc/hosts.conf
thanks for the assistance until now ivan

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CLASSPATH=/u01/app/oracle/product/10.2.0/db_1/JRE:/u01/app/oracle/product/10.2.0/db_1/jlib:/u01/app/oracle/product/10.2.0/db_1/rdbms/jlib
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Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost.localdomain)(PORT=1521)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for Linux: Version 10.2.0.1.0 - Production
Start Date 09-JUL-2010 13:28:24
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Instance "ORCL", status UNKNOWN, has 1 handler(s) for this service...
Instance "orcl", status READY, has 1 handler(s) for this service...
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Instance "orcl", status READY, has 1 handler(s) for this service...
Service "orcl_XPT" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
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LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 09-JUL-2010 16:00:19
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost.localdomain)(PORT=1521)))
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Instance "orcl", status READY, has 1 handler(s) for this service...
Service "orcl_XPT" has 1 instance(s).
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LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 09-JUL-2010 16:03:25
Copyright (c) 1991, 2005, Oracle. All rights reserved.
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Copyright (c) 1982, 2005, Oracle. All rights reserved.
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