You can configure apache through mandriva's control centre, I believe
You should also use Mandriva's equivalent to the add/remove programs to install apache, which may under the name httpd
I think you should spend some time with google and researching. I'm not familiar with Mandrake/Mandrive - 9.1 put me off for life so I don't know how you would use the gui config tools. I'm a slackware man you see and compile apache locally at my server then edit the config files to setup it up