Run Ubuntu in Vista from the web
There are all sorts of ways of running an operating system within an operating system. The most common is known as a virtual system by which the host computer emulates another operating system within its own. It’s how Parallels works, which runs Windows XP or Vista within Mac OSX. The same can be done with Ubuntu and Windows but it’s not something I would tinker with, there is an easier way.
Full article here: Source