Step 5: Install the software.
Canon has a simple program, CD-LabelPrint, availible for download from it's European downloadssite.
CD-LabelPrint is pretty restrictive as far as features go but is great as a free program. Another alternative is SureThing CD Labeler, but alas it is not free.
The best program I found for printing disks is UnderCover XPUnderCover XP. Best of all, the price can't be beat! If you like it, support it via paypal donation.
Finally you need to have a tray to insert into the printer. You can make it cheap, or buy it (still pretty cheap) on ebay. My tutorial for the tray is herehere.