Is this a computer you are using at work ?
or
one you got used from a gov. office and are using at home
i ask because RHEL 5.6 is a bit old , and red hat is not a free operating system
You need to have a paid license and register it with red hat
RHEL5.8 is the current in the old 5 series
If this computer has not been upgraded to 5.8( form 5.6) then it has not received any
SECURITY updates in over a year.
( With the exception of back porting them to the old 5.6 - and that is not cheep )
if this is a box you are using in a govt. office your tech support / your system admin will have the needed info
if not ?????
you might not be able to install any needed software needed to fix this .
Some information on the hardware will help
"sis3.sh" is a good start if you have no idea what is in the computer
http://sourceforge.net/projects/sysinfosh/
it is an interactive shell script for normal basic linux commands
You will need to be root to run it
using two monitors normally needs a 3d card ( and the driver )
option "5" in the script lists the PCI devices
one of them is the video
or use the terminal
Code:
su -
lspci | grep VGA
and that will output the graphics card/ chip if there is one