The easiest way to Linux:
http://www.cutlersoftware.com/ubuntu...-US/index.html
Wubi is an unofficial Ubuntu installer for Windows users that will bring you into the Linux world with a few clicks. Wubi allows you to install and uninstall Ubuntu as any other application in Windows.
Install and run Wubi and, pick the Ubuntu Flavor of your choice:
Ubuntu – the original version runs the GNOME GUI environment by default
Kubuntu – a modified version of Ubuntu that runs the KDE GUI environment by default (probably the desktop that appeals most to Windows users)
Xubuntu – a “lighter” version of Ubuntu using the XFCE environment, designed specifically for less powerful systems such as old Pentium 2’s
now Wubi will download the appropriate 'unattended Installer' (700 MB) and after the reboot it will automatically install Ubuntu without the hassles of resizing partitions or the configuration of a boot manager.
If you don't like it, you can simply uninstall it from the add/remove programs menu.
the advantage over a Virtual Box is that the full power and original hardware of your system will be made available to Ubuntu.