new Ubuntu user w/ questions

[Bob Holtzman]

I recently decided to try out Ubuntu and have a couple of questions. I have RT'd a couple of FMs
and tried to wade thru this list's archives with no luck. I'm running Ubuntu 7.10.

1. What is the purpose of having both /media/cdrom and /media/cdrom0? I realize one is a link 
   to the other but I'm wondering why both exist. The same applies to /media/floppy and 
   /media/floppy0.
   
2. When trying to add content to a rewritable DVD that has previously been written to I get the 
   warning that I don't have permission to write to that directory. When I try to chmod 777(as
   root)/media/cdrom0 I'm told it is a read only directory even tho /etc/mtab shows it mounted as rw. 
   What am I missing?

Please forgive the simplistic questions.I've been running Redhat for close to 10 years but it 
seems there is a learning curve when going to a Debian based distro.
X
-- 
Bob Holtzman
"If you think you're getting free lunch,
 ......check the price of the beer!"