How to permanently change permissions on cdrom device

[kevin.kempter at dataintellect.com]

I need my cdrom/cdwriter device to be readable and executeable by everyone. I 
can run chmod a+rx /dev/hdc however when I reboot the perms go back to  r+w 
only by the logged in user see my ls -la listing below:

Any help would be mucho appreciated...

$ ls -la /dev/hdc
brw-------  1 kkempter disk 22, 0 Sep  9 08:38 /dev/hdc