Windows XP Mode (XPM) will be available as a free download for users of Windows 7 Professional, Ultimate and Enterprise, whereas presumably more cut-down versions of the operating system will require a fee to add the functionality. A fully licensed copy of Windows XP Professional SP3 will be included with the add-on.
Pic Source: SuperSite for Windows
The details were first revealed by Rafael Rivera and Paul Thurrott, two prominent bloggers who are also collaborating on a book called Windows 7 Secrets. "XPM does not require you to run the virtual environment as a separate Windows desktop," Rivera said. "Instead, as you install applications inside the virtual XP environment, they are published to the host (Windows 7) OS as well. That way, users can run Windows XP-based applications, like IE6, alongside Windows 7 applications under a single desktop."