it can be installed in Windows 8 if a user has technical expertise and a Windows XP installation disc. See desktop virtualization and Windows 7.
Microsoft had offered the Virtual Desktop Manager as part of the Windows XP PowerToys, and a little while later released the SysInternals Desktops add-on which enabled similar functionality.
XP added a personal firewall (see Windows Firewall ... See HyperThreading and Remote Desktop Services.