Yes...you will be able install and update and use XP normally. Now this is were it becomes tricky. If there are any other vulnerabilities discovered, MS will no longer create fixes for it. So you will be using it like an "as is" product or "at your own risk" type of deal. IMO, is just a ploy to get one to buy the next OS. I know a lot of people that have and still use windows 98/98 SE and use the web and not had any ill effects. Me personally, I have 2 XP machines that I will continue to use.