Robolinux, a distribution project designed to ease the transition from Windows to Linux with the help of a pre-configured VirtualBox addition running Windows XP or Windows 7, has released installable DEB files for Ubuntu and Linux Mint Stealth VM For Ubuntu & derivatives these packages provide an easy-to-use wizard for installing a licensed copy of Windows that would run in a virtual environment alongside Linux: "What many Windows XP users want to do is run Windows applications inside Ubuntu or their Ubuntu derivative. In a few clicks the Windows XP or Windows 7 virtual machine is instantly built and fully configured and ready to go. Then you simply load your Windows disk and programs.
