few things about RH9.
1. no longer supported and is considered legacy. do a google serch for fedoralegacy and yum.
2. as for getting to the CLI there are a few ways to do it.
ctrl+alt+F1-F5 will get you to new terminals. these are all CLI only, but you can startx in them if you wish.
the easier way to get to a terminal is to click on the redhat (main menue) then its under system settings (i think, its one of the lower system something) and near the bottom is a black window. right click it and put it in your panel.
then when ever you want/need to do something in the CLI you can just click that black box on your pannle (task bar for windows area) and you will be given a white screen that you can do what ever you need in the CLI.
that will give you great detail about useing the bash terminals.
that last one also has a short compairison between DOS and CLI commands.