over seamlessly, though I found very few problems. The Upgrade Assistant did display a warning about de-authorising my iTunes account, presumably because the Windows 8 installation will count as a new computer but it's reassuring to see the upgrade checker go into this level of detail. The other warnings were mostly related to pre-installed utility software that came bundled with the PC, but it's important to note that any incompatible programs will have to be removed before the upgrade can proceed. The next step is to decide how you'd like to install Windows 8. You can keep everything -- Windows settings, personal files and installed applications -- or just your personal files, or nothing at all (a clean install which wipes your hard drive and starts from scratch). The latter option gives you the opportunity to torch several years of collected clutter from your hard drive, but does come with the inconvenience of reinstalling your applications and personal files. It goes without saying that you shouldn't go down the latter route unless you have all your documents and files safely backed up. During my upgrade I chose to keep everything, to see how well Windows 8 would handle the transition. The final page of the Upgrade Assistant includes an Order button, enabling you to purchase the new operating system if you want to go ahead with the upgrade. It's here you'll need the promo code if you've signed up for the 10 discount. You're asked to supply the usual billing