i'm using my redhat messenger kopete,so when i connect to the internet through my yahoo account ,it tells me that i'm running old yahoo version ,so i downloaded the msgr9us.exe file to download the new yahoo but i don't know how to establish this file ,i double click it but it doesn't work ,so please anybody knows what should i do to run this exe in order to complete downloading yahoo,and after dowanload what should i do too ???
thanks for ur patience

The file msgr9us.exe is a Windows executable and cannot be run in Linux, except for the Wine or similar environment. A lot of time ago, yahoo messenger supported linux, providing RPM and DEB packages, but it looks like this kind of support has been discontinued. An alternative is Pidgin (former Gaim) which claims to support a lot of different networks, yahoo included. You can give it a try.

You might want to try this Yahoo! Messenger for the Web, an online version of YM.

i downloaded pidgin
but when i treid to installe it look what happened :
[root@localhost yum.repos.d]# yum install pidgin.repo
Loading "rhnplugin" plugin
Loading "security" plugin
This system is not registered with RHN.
RHN support will be disabled.
pidgin 100% |=========================| 951 B 00:00
primary.xml.gz 100% |=========================| 33 kB 00:03
pidgin : ################################################## 202/202
Setting up Install Process
Parsing package install arguments
No package pidgin.repo available.
Nothing to do
what can i do now ????

Indeed, you have to install pidgin, not pidgin.repo. The web site tells to copy the downloaded pidgin.repo file in /etc/yum.repos.d/ then issue:

[root@localhost Desktop]# yum install pidgin-2.6.2
Loading "rhnplugin" plugin
Loading "protectbase" plugin
Loading "security" plugin
This system is not registered with RHN.
RHN support will be disabled.
0 packages excluded due to repository protections
Setting up Install Process
Parsing package install arguments
Resolving Dependencies
--> Running transaction check
---> Package pidgin.i386 0:2.6.2-0.el5 set to be updated
--> Processing Dependency: libgtkspell.so.0 for package: pidgin
--> Processing Dependency: libpurple.so.0 for package: pidgin
--> Processing Dependency: perl(Purple) for package: pidgin
--> Processing Dependency: libpurple = 2.6.2 for package: pidgin
--> Running transaction check
---> Package pidgin.i386 0:2.6.2-0.el5 set to be updated
--> Processing Dependency: libgtkspell.so.0 for package: pidgin
---> Package libpurple.i386 0:2.6.2-0.el5 set to be updated
--> Processing Dependency: libsilc-1.0.so.2 for package: libpurple
--> Processing Dependency: cyrus-sasl-md5 for package: libpurple
--> Processing Dependency: libsilcclient-1.0.so.1 for package: libpurple
--> Finished Dependency Resolution
Error: Missing Dependency: cyrus-sasl-md5 is needed by package libpurple
Error: Missing Dependency: libsilcclient-1.0.so.1 is needed by package libpurple
Error: Missing Dependency: libsilc-1.0.so.2 is needed by package libpurple
Error: Missing Dependency: libgtkspell.so.0 is needed by package pidgin

This means that yum needs some extra packages to satisfy dependencies for pidgin, but it can find these packages in any of the available repositories. You can try to find the packages at your RHN account or add the proper repositories to your already existing sources.

It still complained about missing stuff, libsilc-1.0.so.2 and
libsilcclient-1.0.so.1,libgtkspell.so.0 ,coz i didn't find their libraries
plz anyone help

Simplest answer is to install the dependencies. If you do not have the dependencies you can install it with --nodeps option as well BUT it is not recommended.