Before you go and buy the Windows 8 upgrade or the DVD from retail store, it is best that you run the Windows 8 Upgrade Assistant from Microsoft. Currently, I am on Windows 7 Ultimate. I ran through the Windows Upgrade assistant and was surprise to see the possible issues that I would face.
Ever had problems with broswer hijacking? Be prepared for the next attack by turning Windows update on, and reading the guide to Browser Hijacking and How to Stop It. - PCSTATS Tips