Its important to keep regular backups of your data, particularly files that are you'd really be upset if you lost (finances, baby pictures, etc). I recently found a free program called Cobian Backup that is designed for making basic file copy or zip archive backups of your files - it won't burn them to CD or DVD but its a good start. Its a little fiddly to get working correctly mainly because there are a large variety of options, but once you do you'll have pretty reliable backups as needed.