first see if you have created the symlink (in a console, type "ls /dev/d*" and see if it's there)
if is is, you can change these two lines:
/dev/hdd /mnt/cdrom auto ro,noauto,user,exec 0 0
/dev/cdrom /mnt/cdrom udf,iso9660 noauto,owner,kudzu,ro 0 0
/dev/dvd /mnt/cdrom noauto,iso9660,owner,kudzu,ro 0 0
you can change /mnt/cdrom to /mnt/dvd if you prefer. thats where you will be abe to access it from.
to play movies is another kettle of fish entirely. you'll need a player (i recommend xine), and you'll also need to install libdvdcss and libdvdread. libdvdread should be included with RH9, but libdvdcss WON'T be. You can find it here:
You will also need to enable DMA on your dvd drive, which is a little tricky in RedHat. You need to edit the file '/etc/modules' and add the line:
options ide-cd dma=1
and then reboot.
Then you should be all set to go.
When you run xine, it should be set up by default to find the dvd player on /dev/dvd, but you might need to set the region number (1 for US, 2 for UK, don't know any others). Then click 'DVD' and you're away.
Oh and by the way, xine can be got at http://xinehq.de
You'll need the lib and the gui files. Install the lib first, then run ldconfig, then install the GUI. Both are installed by:
tar xvzf xine-file.tar.gz
Hope that helps
Sorry about the editing, I keep missing bits out. I'm done now though