Nigel, There is a full description of what you need to do on the FHUG website in the Knowledge Base How To's. See the Family Historian (Re-)Installation Guide at http://www.fhug.org.uk/wiki/doku.php?id=how_to:index#installation_guide In principle you have to install your original purchased Full Licence Version of FH, then apply each purchased Upgrade Licence Version, followed by the latest free Update download for V4.1.3. There is also information on how to use Windows Easy Transfer that comes with Windows 7, or other methods, to transfer your data and settings from XP to Win 7. Regards, Mike Tate -----Original Message----- From: family-historian-users-bounces@rootsweb.com [mailto:family-historian-users-bounces@rootsweb.com] On Behalf Of Nigel Burton Sent: 06 August 2011 10:55 To: family-historian-users@rootsweb.com Subject: [FHU] Transfer 4.1.3 from XP based to Windows 7 Computer I am uncertain as to the best method of completing the above exercise. The easiest would be to re-download directly from Calico Pie although I don't think an activation code was necessary but would some sort of proof of ownership be necessary? Obtain a crossover cable and transfer the software across from one machine to the other. Last but not least, transfer everything to a USB and re-load on the new machine from there. (I am not convinced that this would achieve the desired outcome because of possible hidden file or files and an install requirement.)   Any advice/help gratefully received   Nigel Burton