Hi,
When considering Windows 7 32-bit or 64-bit and which may serve you best you may find the following FAQ
32-bit and 64-bit Windows helpful. As another member on this thread stated, 32-bit operating systems address a significantly lesser amount of RAM in comparison to the 64-bit alternative. One can find more information on the memory limitations of different Windows editions
here.
For the member, Geofelt, who stated the concern regarding 16-bit Microsoft DOS programs and the compatibility concerns with such architecture, you may benefit from
Windows XP Mode and Windows Virtual PC. Windows XP Mode and Windows Virtual PC, available on Windows 7 Professional and Windows 7 Ultimate, allow you to run multiple Windows environments, such as Windows XP Mode, from your Windows 7 desktop. Those who have Windows 7 Home Premium can easily upgrade to Windows 7 Professional or Windows 7 Ultimate through
Windows Anytime Upgrade. For the Civilization 2.42 application you mentioned, this may be an ideal solution for you. Typically speaking, when utilizing Windows XP Mode and Windows Virtual PC, one does not want to depend on the use of such tools for graphic intense applications because they do exist within a virtualized environment. However, since you stated the application in question is 16-bit, it may work out just fine.
As for anyone else present with Windows 7 compatibility concerns, another alternative would be to test the application in compatibility mode first, prior to resorting to a virtual environment. A great web page to learn more about compatibility mode is
Make older programs run in this version of Windows.
Jessica
Windows Outreach Team – IT Pro