Backup to CD-Rs and DVDs

[Xian]

I don't have any DVD-Rs of any format yet so I was messing about with CDs.
I found I could burn files to the CD in a variety of ways but I can't get them 
back again.
I've used dd and burncd to put the file onto a CD and dd sometimes gets 
something back too, but never works properly.
Any ideas how to do this properly?

-- 
/Xian

"As far as the laws of mathematics refer to reality, they are not certain, as 
far as they are certain, they do not refer to reality."
Albert Einstein