I'm sorry I made a stupid mistake.

I told you to do this:

"/dev/cdrom1 /cdrom1 auto user,noauto,exec,ro 0 0

to

/dev/scd1 /cdrom iso9660 defaults,ro,user,noexec,noauto 0 0"
but I should have told you to change it to:

/dev/scd1 /cdrom1 iso9660 defaults,ro,user,noexec,noauto 0 0

The command you should use to mount would then be mount /cdrom1.

The change is from /cdrom to /cdrom1

Sorry about the confusion. I should have read my post a little more carefully.

Also make sure you've got a cd in the drive before you try and mount it.

Hopefully it should work this time.