How to install video and network drivers on Toshiba Satellite c640 (running RHEL5)?
 

pl send toshiba laptop model: satelite c640 x4012 grafix driver and how to install this driver in redhat el5

pl send toshiba laptop model: satelite c640 x4012 athrosh ethernet driver and how to install this driver in redhat el5 ?

?

Ask red hat
You are paying them $299USD / year ( standard support contract) for updates and support

use it!!!
http://www.redhat.com/support/
and/or search the red had knowledge base
( your RHN user name and pass you set up with the REQUIRED license IS NEEDED )
https://access.redhat.com/knowledge/search

Definitively you should ask the Red Hat support. I say this not for unwillingness to help, but because they may really offer the best solution for your system and they will do it in the Red Hat way! This is my :twocents:: avoid any risk to scramble your system with erroneous advices or random mistakes and trust the official Red Hat support you paid for.

Maybe it is worth taking a look at the official Toshiba corp. Linux support site http://linux.toshiba-dme.co.jp/linux/, too.