Last updated on 11th August 2010 Windows 7 Information Both the Windows and DOS versions of Jewelry Shopkeeper have been successfully tested under the Windows 7 platform since early 2009. Note that there are 32-bit versions of Windows 7 and 64-bit versions. All new computers can run either version of Windows  7. All older / existing computers should run Windows XP Pro. Visual Jewelry Shopkeeper (for Windows) is fully compatible with both 32-bit and 64-bit Windows 7 so if you are a new Visual Jewelry Shopkeeper user you can choose either 32-bit or 64-bit Windows 7. JS-Classic (Jewelry Shopkeeper DOS Version 10) and earlier versions are compatible only with 32-bit versions of Windows. If you currently run Shopkeeper for DOS you will need 32-bit Windows 7. If you inadvertently order a new computer that arrives with 64-bit Windows 7, ask the computer vendor how you can have it reconfigured with 32-bit Windows 7. Note that 64-bit Windows 7 Professional allows you to install “XP Mode” which will  run JS-Classic. However, in most cases you’ll find it easier overall to just switch to 32-bit Windows 7. If you have previously used Shopkeeper for DOS and now have VJS you will likely want the option, for a period of time, to occasionaly access the JS-Classic interface. Thus new computers should have 32-bit Windows 7 installed. If you have several computers, and a new computer is shipped to you with 64-bit Windows 7 you might leave it as-is provided you have other computers on the network running 32-bit Windows XP or Windows 7. There are essentially no known performance benefits of 64-bit Windows at this time. But in the future there will likely be some benefits.