strange mount issue

[Brian Densmore]

Ok, this morning I tried mounting a cd on my laptop.
It told me only root can do that.
So I logged in as root changed the /mnt/cdrom ownership 
to root.cdrom and also the /dev/hdb and /dev/cdrom.
I am a member of disk and cdrom. I gave /mnt/cdrom 775
permissions. I don't think I changed the /dev permissions.
I still can only mount as root. Is there something I'm missing?
Do I need to change the /dev permissions to 775?

Thanks,

Brian Densmore