I use a CD Writer and its great.
I have 5 ReWritable disks that I use to back up different directories from my hard drives.
Just pop them in, and use them like a hard drive, as mentioned above.....drag and drop.
I use a batch file to only update files that have changed, so the whole things only takes a couple of minutes after the original save.
No excuses for not backing up now !!
You can get CD Writers of as little as £75.
Shop around, and buy on the Web.
I use
www.scan.co.uk or
www.dabs.com Always been good for me.
Good luck.
A lesson well learnt !!! We have all done this at one time or another. I lost a load of data once, and have only just started to be able to look back and laugh at the experiance !!