Hi. I was wondering if someone downloaded and saved a Service Pack, installed an OS, then installed that Service Pack: Would it save them from downloading the prior service packs and updates? Eg: A person installs Windows XP with Service Pack 1. But beforehand they got a copy of Service Pack 3. They then install Service PAck 3 ontop of Service Pack 1. Hence erasing the need to get Service Pack 2. Or do you need to start from the first update and get the rest no matter what? Windows update messages told me Service packs have all the previous updates and service packs with the newer one. So Service Pack 3 has everything before is (including Service Pack 2 and 1).