According to the web page link below you can run Pedigree for DOS on Windows 7 (32-bit) OK, but needs free utility DosBox for the 64-bit version. See http://pugweb.org.uk/faq/pediwin BTW Ancestral Sources 32-bit will run on 32-bit or 64-bit PC, but AS 64-bit only runs on 64-bit PC with a slight performance improvement over AS 32-bit. Happy New Year, Mike Tae -----Original Message----- From: family-historian-users-bounces@rootsweb.com [mailto:family-historian-users-bounces@rootsweb.com] On Behalf Of Laraine Hake Sent: 31 December 2011 19:04 To: family-historian-users@rootsweb.com Subject: Re: [FHU] Ancestral Sources 32 or 64 Thank you! I have XP (because I still wanted to be able to run Pedigree which is DOS based!!!) so I guess I need 32 Laraine -------------------------------------------------- From: "Barry Laughton" <barrylaughtonquick@gmail.com> Sent: Saturday, December 31, 2011 6:59 PM To: <family-historian-users@rootsweb.com> Subject: Re: [FHU] Ancestral Sources 32 or 64 > HI Lorraine > It depends on your windows7 package, there are two versions, one on 32 bit the other on 64 bit. As far as I know, any previous version (XP, Vista, Windows 98 run on 32 bit > I would be very grateful if somebody would explain whether I should be downloading the 32 bit or 64 bit version of Ancestral Sources! On what does it depend? > > Laraine >