I have written a very details step-by-step tutorial on how to upgrade an older PC operating system to Windows 7 in order to be able to run Adobe's new Lightroom 5. Find it on As Seen by Janine's Photo Blog. Hope others find it helpful and please share the link to anyone you think could use the information. http://asseenbyjanineblog.com/tutorials/upgrade-pc-operating-system-to -run-lightroom5/