Although the anti -virous disc arrived a fortnight ago, I have only just loaded it as the old version was still valid. It took about 5 minutes to extricate the old version and load the new. However, it had to update itself from Kaspersky Lab. which took another 20 minutes, but for around £7 purchase price, who's arguing? Excellent!
I only use this book as a reference guide for problems I might come across using Windows 7. So far it has answered most queries except the recovery of 'Autoplay' after a photo SDHC card went rogue and affected the said software.