XP compatibility mode for Windows 7?

In seeking information about whether the Home Premium version of Windows 7 would be adequate for my laptop, I came across this quote on this website: "Home Premium still has compatibility mode that can be used to launch XP programs." What does that mean? What doesn't it mean? For example, what will happen if I try to run an older version of SPSS, a statistical software?

 

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Last updated October 27, 2018 Views 52,812 Applies to:
Answer
Most applications that were designed for Windows 2000 or Windows XP will still function correctly under all editions of Windows 7, including Home Premium. Some applications check the version number of the operating system and will fail to run if it finds an unexpected version number, therefore Windows 7 has a compatibility mode which allows these types of programs to run correctly. 

There is also another compatibility option geared towards IT professionals and business users which is called "Windows XP Mode," which is essentially a fully-licensed copy of Windows XP Professional running inside of a virtual machine and is only available to Windows 7 Professional, Windows 7 Enterprise, and Windows 7 Ultimate users. 

Windows XP Mode is meant primarily for companies who have designed their own software in-house which is targeted specifically for a version of software - a prime example of this is a web application that only works in Internet Explorer 6 (which is available with Windows XP, but not with Windows 7).

For more information on application compatibility with Windows 7, please see http://windows.microsoft.com/en-us/windows7/help/compatibility and http://windows.microsoft.com/en-us/windows7/Make-older-programs-run-in-this-version-of-Windows.

For more information on Windows XP Mode, please visit http://windows.microsoft.com/en-us/windows7/products/features/windows-xp-mode and http://windows.microsoft.com/en-us/windows7/install-and-use-windows-xp-mode-in-windows-7.

Hope that helps, have a great day!
Kristan M. Kenney ("Nighthawk64")

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