Don't think there is an error in 5.6 Darren,
But without log files, nobody will be able to guess what's goin on.
Include the relevant portions of the /var/log/messsages file.
(where it detects the drives)
I've done numerous cd-writer install's, scsi/ide/old/new. Every drive 'just worked'. There is no need to install anything extra. Everything needed is already in 5.6, unless you have some really obscure hardware..