blue screen to config lan interface

I use red hat linx ES 4 ,5 , how can I start up attached screen to config the lan interface in command mode ???
Please advice in detailed ??

From the title of the thread, I'd say "system-config-network".

But having a look at the attached screenshot I think what you need is "rhs-hwdiag".

Just install the package and you should be able to use the CLI.